I use Helion Samples in almost every track. Just amazing!
I started to use Helion Samples products as a base for creating new ideas. It seems you can re-create pretty much any sound in the Trance / Progressive world at the moment with their stuff!
I have to say taht some of the Helion Samples as some of the best i have used. The sylenth banks i have played with so far have some really superb programmed preset souns for the current sound. It really is instant power & quality atyour finger tips. I really recommend them!
Helion provides a great set of highly usable sounds. I have incorporated many of them into my recent productions. Well worth checking out!