Unknown if a good brand but the one I purchased is made in Spain and powered by Vodafone:
https://netun.com

*and on the official list!

My personal view is if a brand is important then go for that . Main thing is get one that is on the authorised DGT list and one that is location connected and not just light only. As for communication signal i would guess that whatever the system i.e. SIM uses will be universal and like emergency calls use whichever is the strongest in the area.

With something like this I actually think brand is important.
There seem to be a lot of Chinese supplied ones on Amazon.es and while sold via Amazon Im not sure I would trust them.
They all seem to have the same 'cut and paste' descriptions and that always bothers me.
How are you going to know if the cheap one actually have the esim?

Many people confuse the CE on cheap Chinese stuff as being proper Conformité Européene when it just means China Export.

Probably because it's not a requirement!
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You can check if it is on the DGT list of approved ones. How one checks for the e sim without taking the thing apart is the issue. The one i got came with all the paperwork certifications and stamped number which is required under the V16 legislation and is named on the approved DGT list. As i say if one wants a particular brand then thats what they should get. I guess DGT have tested all the ones on their approved list for compliance and suitability

Yes just about all new cars come with the inflation kit and if you want a spare wheel you pay for it.

I think we just want a quality device at that price, so either 'Made in Spain' (or Europe) or something from a renown company like Osram.

The Netun one that PoloMarco suggested looks good, especially since it comes with an app that works with a number of insurance companies (towing assistance?).

Before I bought while checking them out I noticed they Netun had one that said it was connected for location but that was via an app and Bluetooth, I wasn't sure that would be compliment with the incoming law. Netun do the Helpflash IOT which is fully compliant I don't know if that also links via the app using Bluetooth. To be honest my car has the inbuilt SOS button for breakdown etc. Netun would seem to be a very good device and fits your requirements. The choice of which one anyone should choose is for the individual. I simply showed the type I got which fitted what I need i.e. to comply with the law the only other point I have tried to stress is make sure it's on the DGT compliant list and is a V16 connected beacon not just a flashing light beacon. I am not suggesting anyone should buy the one I bought that choice is for the individual. The one I got is legal per incoming legislation which is what was my purpose of buying a new one to replace my shortly to become non compliant help flash light only beacon which came with my car when I bought it new two years ago.

I just don't understand all these discussions about which one to buy. If its DGT approved its OK. Just choose the one that will fit in your glovebox and forget it. You almost certainly will never need to use it. Why worry about such a cheap device when 50% of you buy hugely expensive Chinese phones without a second thought! You cant even fill up your fuel tank at the price of a beacon. As for getting into trouble with the "authorities" for having the wrong one - you must be joking! When did the Guardia ever inspect your triangles or security vests for authenticity? Life is too short to worry about such trivial things - just get the one you like from Amazon.

All I wanted was to ensure should I be stopped what I had was on the DGT list . I have it in the car job done for me ..

Nail firmly on the head !

I just want it to be a quality product, that's all. I hope I never need to use it - which would render the choice of device irrelevant as long as it's compliant - but if I happen to be SOL one day then I would prefer that it works perfectly and does its job.

Anyway, I've got 9 months to come across one in-store as I don't like ordering online with no access to InPost lockers in Gran Canaria...

There is a secondary debate to be had concerning rechargeable -v- replaceable batteries.

With a suggested life of 10+ years personally I don't fancy the survivability chances of a rechargeable battery which is stored forgotten in a potentially scorching hot car glovebox for years on end and of course if (when) it does fail the unit is effectively rendered scrap whereas with replaceable batteries it's something which could be diarised to do on an annual basis, say at ITV, annual service, or SUMA time.

I believe from what i have read that being battery only is part of the DGT V16 specifications. As far as i am aware non of the DGT approved beacons have any form of external power support such as micro usb or similar to use power from the car. They state it has to be independent of car power as car power may or not be available. That makes sense. For something like this i personally wouldn't rely on rechargeable batteries. I keep a set of batteries in the beacon and spare set of good quality batteries in the glove box. As you say the beacon is only every going to be any use with good batteries no matter which make it is.

Mine came with 3 batteries. Even then, I would expect any owner to check them occasionally, or at least change them after a few years.