I turn in Ableton Live 5
Stable low fuel consumption (monophonic, so normal. Polyphonic version is the same with 4 waveforms instead of two + + the polyphony of other stuff, free too. Poliblit it or something like that)
I have a small config: AMD Sempron 1.8GHz on low-end motherboard with 512 ram, runs well, not really CPU-intensive
I love his sound, he and his big brother polyphonic are excellent, quite capable of replacing a Subtractor Reason!
I love the sounds to acids, for the fans.
Nice clean interface and ergonomics
Blackjack and bug-free,