New to SNG's ... I've got a few questions

[Instinct]

If you have anything to say about any of my questions, I'd appreciate ( I'm gonna cross post in touny's section too )

I have just come off one of my worst 10 days since i've been playing almost 100% online. ( Lost a fair bit but concentration has been bad and been making mistakes ) I've found my swings have been huge playing 15-30 and 10-20 and I just needed a break.

So I decided to break the "grind" and play some SNG's this weekend.
I don't have a lot of experience playing nl but prefer the nl SNG's to the limit ( from when I used to play them at Paradise last yr )
This weekend I played 7 $50 nl at party. I won 2, came 2nd in 1, 3rd in 1, and out of the money in 4. I was quite surprised to see at least 3 or 4 really bad players in most of them.

So I'm wondering if there are players out there that are making decent money playing these SNG's ... what sort of % are some of the better players making as a percentage of the buyin over the long run?
How does the competition fare in $100 and $200 SNG's compared to the $50 ones?
Do I need to worry about collusion in the higher limit SNG's?
Is the competition alot tougher at Stars than at party for these tourny's?

Any other insite from experienced SNG ers would be appreciated as i have enjoyed the change!

Instinct