Yes the PCM series Lexicon gear is the more serious stuff.
If you don't have a huge budget I would actually consider auditioning a
TC Electronic M-One XL
I chose this over
a Lexicon MPX-550. IMO the it just puts more 'air' around everything.
How
the Lexicon MPX-1 compares I can't say.
A PCM-91 I've used, didn't exactly totally smoke
the M-One XL into oblivion, in fact for quite a bit of stuff I prefered some of the algorithims in the M-One. Basically it comes down to whether or not you prefer the TC sound over the Lexicon sound or vice versa!
Generally I find the TC verbs tend to have a more ambient 'airy' quality that really give the source clarity and presence without managing to bury it, and as a result I find myself hearing the source 'enhanced' rather the hearing the effect as a seperate entity, which I often do with other verbs... even Lexicons!
TC are about to bring out their
TC Reverb 4000 which I think will smoke a PCM-91. It's basically a single engine version of their flagship M6000 Studio Reverb which seems to have taken over the mantle from
the 480L.
I wouldn't hesitate to buy
a Reverb 4000 based on my experience with TC verbs.
Just send your donations to....
