O/d... I guarentee I could construct some synth riffs on a Prophecy and Reaktor 2.3, and you wouldn't know the difference...there is nothing wrong with FruityLoops...use your own samples and fill in the map.
I'm a hardware guy...but software should not be ripped on...it's so convenient in many situations. I've got the Virus TDM on my Pro-Tools setup, and it's out of this world...70 voice polyphony foo!