I had a quick view at this post : https://www.reddit.com/r/radeon/comments/157qa6c/rx_6600_or_rx_6700_xt_for_1080p/

It seems to me that 6700xt is much stronger than 6600. More expensive, too. Personally, I would pay some extra money 6700xt, but it depends on OP’s budget and game preference.

I’d suggest OP to consider several factors:

1. Is the game you’re playing CPU-intensive? aka Will your 3600X be the bottleneck if you have a powerful GPU?
2. Do you have a 4K/1440p monitor?

I wonder why DOTA2 was not mentioned… It has a really decent Linux support for more than a decade

I think the biggest challenge is anti-cheat. I don’t know if there is any solution instead of waiting for native release (like Dota2 and CSGO). Also, although I don’t like Microsoft GamePass, lacking the support of it means we may need to pay extra to try various games.

I think Wine/Proton works really great nowadays (well I’ve repeated it at different places). As 2023-07-28, ProtonDB shows that in the top 1000 games, 75% are rated gold or better.

When it comes to distro, I think most popular ones are good enough if they meet to conditions (1) packages are not too out-dated (2) Not difficult to install some non-free dependencies (like rpmfusion)