Hi Jake,

Welcome to Flyertalk! This is the right place to ask this question, but I'm afraid your budget is a bit low, especially considering the mileage you are putting on your gear.

Six international flights in the next two weeks? If that's one trip with a handful of connections then fine, you might be able to get away with something cheap. But if you routinely keep up a schedule like that then cheap luggage is going to break down and be a waste of money. I would recommend a Briggs & Riley spinner myself (here).

I would stay away from a center-opening "clamshell" design at all costs (like the Delsey you linked, and other famous makes like Rimowa). They open in the middle, which means you can't just put it on a luggage rack when you get to your hotel and live out of it for the week. To open it you have to lug it over to the bed and flop open both sides at once, which is a real pain. Get a top-edge opening case like Briggs instead.

I know B&R is priced out of the range you mentioned. But they have an awesome lifetime warranty. If you keep traveling it will last you a long time.