I have both the Rocktron Intellifex and Replifex, and they are both great units. I think their best feature is if you bypass the Hush, they actually have an analog dry though, and zero tone suck. It also makes patch switching pretty seamless, even though there is a little delay in patch loading, the dry keeps going.
I like the Intellifex delays and reverbs better, but, the delay times are limited to 420ms if you use chorus + delay, delay + reverb, etc. That's not a show stopper for me, I rarely used reverb live if ever, and recording I always do delay and reverb effects post on busses.
The Replifex is way less deep on the delays and reverbs, but it does have longer delays, and also can do spillover which is a nice touch for live.
The Intellifex and Replifex use wall wart power supplies.
I also have a Lexicon MPX-G2 (which is similar to the MPX but has additional features including some analog effects) and is geared for running 4 cable method so can put some effects in front of amp and some in the loop/after pre-amp. It also has an analog path and is super transparent. And finally, I have a Lexicon MX400XL which is similar in a way to the TC M-One XL (which I considered) in that the MX200/300 series could only do 2 effects at once, but the 400 allows for 4 (it has 2 processer chains so can do 2x2). One thing I really like about the Lexicon stuff is that you can do delay and reverb in parallel, which can make them a lot cleaner, or you can chain them in either direction.
Now, that being said, I don't actually use rack stuff any more, and delay and reverb were the last holdouts in my setup - I've switched over to pedals and recently got a NUX Atlantic Delay/Reverb. I'll post on that in the effects section, but I would seriously consider that if you already have a pedalboard, and I'll go in to why in my post on that. The short is: it has some features that made me not miss having delay and reverb in a rack back with my rig.
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