I've just uploaded my very first Aspect track - Ninja Step 2012 - which is a remake of Yuzo Koshiro's Ninja Step from the landmark '89 Super Shinobi Megadrive game. This is also the first time I've ever used RNCBC's samplv1 LV2 sampler and my second complete qtractor production.
Aspect is as CPU efficient as I had heard, in fact more so! I've got a 3/4 year old core 2 duo laptop and with NS2012, which features ~15 instances of Aspect and as many audio tracks I've not seen the CPU go much over 14%!
qtractor is badass now it has automation. qtractor + Aspect + samplv1 is proving to be a very nice lightweight sequencing combo. I had so much fun putting this together it should be, and these days it likely is, illegal!

http://soundcloud.com/danmacdonald