Right there with ya! GameCube has always been my favorite. It also has the best iterations of Kart and Smash imo. I’ve recently been acquiring more GBA games to play on the adapter which is a fun time.
A tip for anyone who has the DOL-001 version with the digital output: you can easily get and adapter to HDMI, and there’s a company that now makes a USB-drive sized signal processor that does some upscaling and anti-aliasing. I’m now able to play on my 4k TV with a 1080p signal. Anyone feel free to DM me for the details!
I’m not saying a big old CRT isn’t still the best experience, but this lets me play on my main TV which is great for party games.