That would be my advice, too !jens wrote:My recommendation is to get them all.
Simply buy EVERYTHING and you'll have - at any given point in time - the BEST there is !...
Joke aside... these kind of questions lends themselves to a disaster (for the question maker). there is absolutely no way to methodically and scientifically decide which is "the best". one (revered) reverb might shine on certain material while extracting a "MEH" on other material. and there are SO MANY reverbs out there. I something ponder the notion of having one HW reverb just for the sake of not having to deal with endless and tiresome comparisons (ahhh... that bloody word )
Simply buy according to depth of your pockets. Valhalla is a good place to start (not least because there are TONS of free presets for them out there - Sampleconstruct's are the most notable, IMO - which extends and leverage their capabilities to no end) but you can catch terrific deals on the way at any given time (eg. Lexicon, Eventide etc.)