emusonacid! legacy

Now, I know there are two different versions of this upgrade, the 6320 and the 6870.

And I know the first one will work in the Classic series only, the second in the Ultra series only (and please, correct me if I'm wrong on this... I'm making an assumption that the 6320 series ROM will work with the e6400-Classic, even though the literature with it lists only the E-IV and e64)

And, further, I know that the first series ROM came with around 256 presets, while the later version came with something like 500 presets (from what I've been able to find out).

So my real question, for those who already have either version of the ROM upgrade, is... should I even bother looking for this/these ROM/s? Is there really any significant gain to be had? Is there some truely earth-shattering sample or preset here that I really could not live without (if I knew about it)?