600 SNG checkup

[Vish]

Here are the stats after 600 $55 SNGS:

ROI: 21%
ITM: 38%
Net Profit: $6900

Finish Distribution:
1st: 16%
2nd: 9%
3rd: 13%
4th: 13%
5th: 14%
6th: 12%
7th: 12%
8th: 5%
9th: 4%
10th: 3%

For those curious about variance:

Longest out-of-the-money stretch: 12 (had 3 of these)
Biggest downswing: 15 buyins over about 90 tournaments
ROI breakdown by sets of 100:
1st 100: 23%
2nd 100: 43% (What I wouldn't give for more of these!)
3rd 100: 16%
4th 100: -6%
5th 100: 13%
6th 100: 35%

Does anything jump out at anyone about my finish distribution/ITM?

Also, should I consider moving up to the $109s? I'm hesitant to move up because poker pays the bills, I'm travelling soon, and building the roll would take time, but it might be a good investment.

Finally, if anyone else has stats on the $55s they'd be willing to share, I'm interested in hearing them.

Edit: Bleh. I knew I'd forget something: the first 2/5 or so of these were two-tabling, the rest were four-tabling.