ROCm is making great progress but I’ve had enough hiccups (desktop with RX9070XT) that I’d still recommend those looking for AI capability to continue using an Nvidia or Apple solution for the time being.
Still, I think it’ll be quite equivalent soon.
I think one of the best AI systems in terms of price/performance is still just to build a desktop with dual RTX 3090’s (of course you’ll need an board that supports dual cards) and toss it in a closet.