there's so much more to the sound of recorded music than just the instruments used -- analog mixing desks, recording to tape, and mastering techniques are as much a part of the sound as 12 bit aliasing or whatever. remember that no matter what you record into ableton, once you've mixed and bounced down it's still gonna sound like it was recorded in ableton!
however there is much to gain from vintage hardware samplers, including of course that desirable low bitrate sound, but also the effect it has on your workflow. this i imagine could be a hinderance depending on the person, but for me, learning a vintage sampler has had a really positive effect on how i approach and think about making music. it's hard and often frustrating work, but i've found the new techniques i've learnt and the many "eureka" moments i've had equally as satisfying as that hallowed low bitrate sound. i mean, just the fact that i have to load and save stuff on a very limited amount of dd floppies means that i finish stuff way more often, as opposed to having a ton of half finished loops saved in logic
and not to sound like a stuck record but: yamaha tx16w yamaha tx16w yamaha tx16w