on a budget ?
lexicon Lxp5 or Lxp1 or Lxp15
Line 6 verbzilla
The LXP5 doesn't have reverb, at least mine doesn't. I've heard that the Alesis wedge is pretty decent and cheap too. If you can stretch your budget to around $300 then you can get the Sony R7, an excellent underrated reverb. I can tell you that Robert Rich, A Produce, and myself all use one if that makes any difference.
Roland sde 330 , sdx 330 , Fireworx .
Neither of those Rolands are reverbs (its the SRV-330 from that line), I have a Fireworx and I don't like the verb in that box for some reason.
The H8000 has no vst support and cant be used as a plugin but ive seen it used as a send effect in cubase sx via adat and its good for that.
The current H8000 is the H8000FW which also offered a firewire interface, but you are correct in that their is no plug-in support, maybe the H9000 will?
BTW I stlll use all my hardware devices within my workstation software (Logic Studio) either via adat, spdif, or plan old analog, it works great.