older one might be a good choice if you can get it for a good price.
IMHO there will not be too many times you are playing back 192KHz material for at least the next year or so, and probably much longer.
Hell, you can't even get a 24/96 digi signal out of many of the hi-res PCM releases these days, (I think many are truncated on playback to 24/48).
You might be doing field recording at 192KHz sometime soon but that seems like overkill for many of the shows we tape at (read, taping a PA system), 96 KHz seems like a reasonable limit for this stuff, consider the amount of space required, at 24/96 2 GB/ hour, 24/192 = 4 GB/hr. That can add up to a lot of space, though with how cheap DVD and hard drives are maybe you don't mind.
Just thinking out loud... since there is a new version maybe you can score the old one for a killer deal.
Take care,
Ben