My son bought an Analog Chorus for me a few years ago for Christmas, which to me sounds awesome: wonderfully warm and natural sounding chorus, with a couple tonal surprises at certain settings to boot. I later bought a Sparkle Drive (I think it's called?), and while it was a pretty cool gizmo to pull more tones from an amp, I didn't find it very useful in getting me to my tone, which comes straight from the guitar to amp. I don't use pedals anymore for the most part, but once in awhile I'll still play through the Analog Chorus.
I've played w/a Micro Vibe and a Sparkle Drive for a few years now. The sound quality is great and I can't imagine a gig w/out the SD. One thing though.......I've sent the SD back to the Lab twice and the MV once for switches crapping out. Super friendly guys and they always take care of the problem. Take a look on Harmony Central and you'll see I'm not the only one complaining about this.
That being said, they must sound pretty damn good or I would have dumped them a long time ago.
Bill