The latest Apple TV SoC (released in late 2021) is the same one used in the iPhone 13 and 14 (non-Pro). 2x 3+ GHz P-cores and 4x E-cores and 4GB of memory. I haven’t noticed any issues.
Yeah but if I spend that much money (not sure about the US but here in Europe it's really expensive, 170 or 190 euro) I really want something recent :) for longevity also. It will have to last a good few years after all. 3 years in for the same price is just not a great deal. It's still a 3 year old cpu (I don't use iOS so I don't really follow what's SoC generation is what)
So I'll wait for the next version.