One of the best analog VSTi. If you need trance lead in your gear, if you're tired of so called analog synth with cheap aliased sound, than Exciton is what you need. There is Reaktor too, the monster synth, but I say that Exciton's sound in mouch cleaner, the filter is also great, and there is the saturation too (the saturation is a little cheap, and may need some fixes). There is an fx section too, but if I were in your place, I'd use other VST effects. There is one problem, using FL Studio 4.12. It looks like FL is sending some reset signals, because Exciton periodically returns to it's default preset. I used it only as a lead synth, but it has some great presets, including pads, strings, basses and more. Probabily is better than Pro53, but there are some, who will contradict my opinion. Try the demo, and buy it!