How about a small paragraph??
<snore>
no, really, i couldn't . . . sure here goes (more like four paragraphs).
roland/boss one of the leaders in doing affordable digital reverbs since the 80s (yamaha and lexicon also did; yamaha tinier; lexicon creamier, but less versatile), so years of experience and functionality crammed into their pedals.
basically three product levels:
rv-(3, 5, 7, etc.) series: basic pedals that are good value, packed with features and small; probably not as creamy as boutique stuff, but i do think you're gonna lose some of that in live situations—especially with bass. some are true stereo; some are mono > stereo; many have reverse or gate. easily found on the used market. uses regular 9-volt battery supply.
rv-200: middle-sized package, mid-size price. <<stereo, programmable, has modeling of the old srv-2000 verb, which i consider a classic. lots of functionality and depth to making sounds. ability to use exp pedals to manipulate in real time; i think you can also use the tap pedal to activate sounds (select verb on only 1-2 notes? i like that). probably higher quality than the regular stomp boxes. reverse/gate is part of it. not super-hard to find used. uses regular 9-volt battery supply.>>
rv-500: larger box, designed to go up against strymon while being cheaper, possibly more flexible? basically two discrete stereo reverbs (probably two rv-200s?) at the same time that you can route in different ways. <<basically copy most of the copy from the rv-200 description above here.>> you can morph between two reverbs using the exp pedal (e.g., one verb is reverse/gate, one plate); have one reverb on and use tap to cut in another one. create fake manfred eicher reverb into reverb patches to give more depth.
for the rv-200/-500 there is some menu diving, but it doesn't seem onerous to me.
i have the 500 (i also have the modulation and delay version, so i like the basic architecture).
**i got into the exp pedal thing through the avalanche run, which i found limiting eventually. then i went to the source audio nemesis delay and ventris reverb (which does two verbs as the same times, but not as well). the source audio stuff allows you to do *more* simultaneous exp pedal manipulations, but the programming is less easy (no menus; can do it through a phone app). i think those sound good, but i think the roland stuff gives me more flexibility.