It's a dream for the gigging musician, especially playing in a band.
1. It's ability to split/layer enables me to play two sounds at once. That's pretty handy on stage.
2. Even if its DCOs don't have as much beef as the VCOs of a Prophet 5/6 (at least in my opinion), in a live situation you won't notice and it still sounds muuuuuch better than the virtual analog section of my Kronos. (Listened to an old recording last week, where I didn't have my Rev2 yet. The difference is like apples and oranges).
3. The integrated effects will suit most of your live needs. Yes, something like the three holy Strymon pedals will sound better, but you have to carry them around, too... and all that cables... ... after two seasons I got back to using the integrated effects for a gig I'm playing this week, just for simplifying my setup. I don't think anybody in the audience will notice the difference.
4. It can simulate basically any other analog synth... at least as much as the audience wouldn't notice. Even more so, when using all the VCM techniques. So you can create sounds for almost every song you want to play (playing in a cover band at the moment). Most of the sounds I need are simple sounds from all the hits of the 70s to late 80s and the Rev2 does the job really well.
5. If I want to do more complex sounds with a lot of modulation (at home), it is my go to synth also. Everybody can read the specs themselves, but the high a mount of modulators and mod slots are a dream. And you can double that when splitting or layering sounds. (16 voice model recommended)
6. I like the keybed very much. It's light enough to play very fast... but hard enough to still feel resistance.
7. I like that it has the wheels above the keybed. I know, that there are a lot of people out there, that want the wheels in the "right" place, but I love to have a 5-octave keyboard with a smaller form factor. And it doesn't weigh a ton. Even when putting it in the hard case, it's easy to carry it around with getting out of breath ;-)
8. The gated sequencer is very nice. Even if it has some bugs. ;-)
9. The extra outputs for layer B... I don't use this very often. But occasionally it became handy to mix them separately, e.g. when playing only bass timbres on the second layer.
10. Using the two layers hard panned left and right. Just as a lot of other users here, I like to have the possibility to create very large stereo sounds this way.
I will stop it here... all in all you will get a lot of analog synth for a medium price tag! I do not regret it. The only thing at the moment is: I don't know how prices are evolving around the world, but in Germany a new 16-voice model costs about 350€ more than when I bought mine. But still I don't think there is something better around in that price range. If I didn't have one, I would buy one.