FWIW Brad Sarno posted this here in 2009:
Re: Reverb Help
#60007 by SarnoMusicSolutions
Sun Apr 26, 2009 3:47 pm
Mr. Springy will definitely not get you there, it's a very low-grade, low-fi design. Check out the new RV-7 by Lexicon/Digitech. The T-Rex RoomMate has an analog dry path, uses a tube, and gets amazing reviews. The Vanamps is ok I hear, but not as long and lush as you may want. If you're going with a rack unit, there are plenty of units by Lexicon and TC that will sound killer, and I'm sure if Jerry had lived long enough, he likely may have gravitated in that direction. Digital today sounds far better than back in the day. If you gotta have springs, there are also plenty of vintage spring units that will sound pretty cool; Orban, Furman, Butler (Tube Works), Sound Workshop, and more. And don't be deceived into thinking the Tube Works reverb unit is all tube. It's mostly solid state with a couple of "starved voltage" tube stages to help warm it up a bit. They're pretty good, but there are others worthy of consideration.