More volatility in turbos.
Less opportunity to use postflop skill in turbos. But, be aware that SNGs have limited opportunities for real high-level postflop play. They're just too short-stacked most of the time, and at the beginning where you have deepish stacks, you'd rather play chip preservation than chip accumulation anyway.
I suspect the best turbo players have a lower ROI than the best non-turbo players, but if you can sustain a +ROI, turbos clearly provide your best hourly rate.
OTOH, as my results indicate, I play standard SNGs because I am much better at them than I am at turbos.
Not sure exactly why. May more be psychological than anything else.
