When can you be certain you have 'beaten' a level?

[Oddchild]

Hi all.

I have played 201 $20+2 Tourneys on PP and have toyed with the idea of moving up levels. However, I am doing ok and I don't want to rush things.

Do you think it's time to move up levels? Are there any noticeable differences at $30+3?

My results are:-

1 41 20.40%
2 23 11.44%
3 24 11.94%
4 17 8.46%
5 20 9.95%
6 22 10.95%
7 16 7.96%
8 14 6.97%
9 19 9.45%
10 5 2.49%

ROI 45.70%
ITM 43.78%
Profit per Tourney $10.04

Any comments/advice?