Hi Sonic, a warm welcome along to the forums.
I think there are mainly 2 popular 5G routers in use with a few of our members.
The
ZTE MC801A and the
Zyxel NR5103E
They are both unlocked so any network SIM should work just fine in them.
If you haven't already spotted the lengthy threads here they are.....
Zyxel NR5103E
ZTE MC801A
You should hopefully get an idea of the good and bad points of both routers from the posts in both threads.
I have used both routers and they worked well for me.
I now use the Zyxel NR5103E as I prefer how it looks.
(Stupid reason I know)
The biggest drawback I can recall for the ZTE was that the external antenna sockets broke off the circuit board really easy which didn't affect me as I dont use an external antenna, but certainly something to be wary of.
Also there are a few posts saying three have disabled the external antenna sockets in a firmware update, but I'm not sure, you'd need to check through the thread for info about that.
The Zyxel NR5103E has a handy in built band locking feature which is nice to have.
There also was a faulty batch of Zyxel NR5103E's too a while back that wouldn't receive a 5G signal, and unfortunately there was no way to know without asking the seller to try a 5G SIM in it before purchasing. (Not ideal)
Anyway, I hope you can have a wee lookie through those threads and see what you think, and hopefully some other users will also chip in with their thoughts here too regarding other routers to try and help you out with your decisions.
Both routers I mentioned above are usually readily available on ebay or CEX for reasonable prices.
Happy reading.