I got an Indigo a couple months ago. It's really heavy for such a little thing.
Though the vast majority of the presets are really crappy, more so than most synths in my experience, the synth sounds fantastic. I wasn't even sure what the "Virus Sound" was before I got it, but things I have made with it sound amazingly smooth and ummm..large or wide or something.
I haven't spent nearly the amount of time I want with it yet, a common problem of mine since I have a sh!tload of synths, not a whole lot of spare time and have to be in the right mood to want to deal with them. Though it's pretty knobby, there are a lot of pretty important parameters hidden in menus, which makes it slightly frustrating until I learn the menu structure and display of the thing.
Despite that limitation and the lack of aftertouch + short and sort of clunky keyboard, it's a real gem and is unlikely to ever leave the collection unless I pick up a full size TI in the future. Even then it's pretty cool to have that much power in such a small and attractive package.
Please feel free
to add me to your Foes