Results:
Playing three tables of 2-4 Limit hold'em
After logging in 400 hrs
Average hourly win rate = $36.57 per hour

Playing three tables of NO Limit hold'em (blinds 1-2)
After logging in 400 hrs
Average hourly win rate = $64.79 per hour

Playing $20 and $30 sit&go's (two at one time)
After logging in 200 hrs
Average hourly win rate = $11.07 per hour

I am now convinced that no limit is the way to go. I showed the numbers to my fiancee (I'm getting married in Maui on Monday March 7th) and she still would not be cool with me quiting my job and playing all day. Go figure, I do love my day job (selling software) so I won't complain too much. But this test proves that no limit cash games is the way to go. It is very important to play a minimum of 3 tables because I usually find myself down at one of the three tables. Also, you have to willing to play for at least 2 hr sessions to allow the time factor to kick in. What really surprised me was how few losing sessions I had. In limit, even playing 3 tables at once, I would get 1 losing session out of 3. But in no limit, it was closer to 1 losing session out of 5.

Regards,
Enrique