I'm really impressed with this synth. (Amazing and wonderful that it's free!)
I've been trying out about 200 free VST synths in the last few weeks, and this one definitely stands out, and I'd consider it in my top 10 somewhere. Each preset has complex character/personality. (And there are lots to try out!) Everything from classic leads to more modern pads; warmth and texture.
In addition, I use Linux to run my VSTs, and this one works flawlessly. No glitches, no gaps, no surprises. Just a wonderful synth, well-made, and very inspiring to play. A rare gem indeed!