Buying my first regulator without a scuba center nearby

Hi folks,

I'm recently certified (0 logged dives after certification) and I'd like to buy my own reg to use my transmitter.

I travel 2 or 3 times per year and I'd dive then, as I live in a country without any good dive sites nearby.

Since the are no dive sites, there are no dive centers... and I wouldn't be able to service my reg here. I'd be able to service it at my destination, but... that's exactly when I'd be in a position to dive.

Do you have any recommendations as to how I can choose my regulator? is there a brand that's easily serviced anywhere (ideally in a couple days, so I rent while it's being serviced)?

I plan on doing fairly standard diving if that helps. Thanks!