I was actively considering purchasing two units of Aardvark Q10 interfaces, but ever since I saw some negative posts at other audio forums about Q10 driver's issues, I have slightly developed cold feet. Most people agree that Aardvark's products are great but they are sloppy on writing drivers which create lot of stability and software compatibility problems. I don't know what they mean by WDM drivers, but it seems that Q10 doesn't have a WDM driver. I have Sonar for recording and XP OS. I especially prefer Q10 for its preamps that obviates the need for mixer or external pres. I sincerely hope that Q10 will work without any probs. Does anyone here use Q10? If yes, please share your experiences.