HUSNG vs STT, hourly rate

[TNixon]

Anybody have any stats they'd be willing to post (or even PM) comparing hourly rates of heads-up vs 9 or 10 person sit-n-gos over a significant amount of time played in each?

What I'm trying to figure out is this:

My overall ROI is higher on the STTs, but since I don't like turbos of either flavor, I obviously get more heads-up games in the same amount of time.

I like the lower variance on the heads-up tourneys, but I can't really handle more than 2 tables at a time, while I'm fairly sure I could easily handle 4 STTs at a time with only a small reduction in overall winrate.

What I'm not sure of (and I haven't played STTs heavily enough to have any relevant data of my own) is whether my overall hourly rate would be higher if I switched to playing 4 STTs at a time rather than 2 HU at a time.

Basically I'm wondering if I'm paying for the lower variance with an decrease in potential hourly earnings.

Any thoughts?