@WhiteNoise
Maybe take a look at the Elektron Model:Samples… it certainly has more time limitations than the sp404 but it is infinitely more fun and capable from a performance perspective, IMO.
Based on your desired features, I’d say it’s a choice between those two.
Sp takes the win if you don’t care about the m:s sequencer, which is incredibly fun and deep.
Pretty much every other hardware sampler/sample player I have any knowledge about has been mentioned already, but I’ll toss out the odd ducks that I personally enjoy anyway.
Mpc 500. The only Mpc I’ve ever felt comfortable leaving the studio with. Maybe worth considering though there’s no live effects or performance features outside of playing your pads really well and have some creative pre planned thing happening in your songs/samples.
Akai mpx - again, no effects or performance anything. Just a sample player.
Korg microsampler - sample time per bank is limited, but I love mine to death. Not suggesting this one at all but it is a sampler so it’s getting mention.
Polyend tracker - literally modeled after a computer workflow so probably not desirable for you either, also the same price as Mpc One, though the performance tools it has are top notch and it’s being updated almost daily.