Vengeance Sound recently released the Vengeance Soundset for discoDSP's Discovery. The soundset contains 64 techno / trance sounds programmed by Manuel Schleis and is divided into the common categories: Lead, Bass, Arp, Syn, Pad and FX.
The Vengeance Soundset costs 29 EUR (plus 5 EUR if you are outside Germany) and there is an MP3 demo song available.
They also have soundsets available for NI's Pro-53 and reFX Vanguard that were released earlier this year.