Some questions on SnGs and things!

Hi everyone, I've been reading the forums for quite a while but never quite got round to registering or posting…but I have a few questions I'd love to be answered if that's ok!

1) I'm a consistent winner at $5+0.5 single table SnGs, I've been placing in around 70% of my tournaments recently. I've been extrapolating my profits if I got the same results at higher stakes, and it's made me think I should make the jump. However, at what level does the competition become a lot harder? Is there much of a difference at $10+1? I'm guessing not, but how about $20+2? Or even $100+8?

2) I play on pokerroom. How is this site perceived skill wise, and are its perks and tournament structures good in comparison to other sites? I'm from the UK by the way, not sure if that makes a difference to perks etc.

3) What placing percentage in SnGs is considered good?

4) How do I calculate my average ROI as a percentage?

5) I hear a lot of players saying they chop the prizes at final 3 or so of a MTT. How do you go about doing the chop, after you've agreed a fair price? Do some sites have facilties to automate chops? I think I can't easily do it on PokerRoom.

Thanks for taking the time to read and answer these.

This should be under SnG tactics, but oh well... Nice to have you here!

1. First off, make sure you are bankrolled well enough to play higher levels; I suggest you read rilla's bankroll management. And if you are winning consistantly at the 5.50's, then move up to the 11's (if your bankroll allows it).

2. I've never played at PokerRoom, so I can't answer this.

3. What do you mean here? If you're asking for places 1-3, then I would say 50% and your doing great.

4. ROI= Profit (How much you have made minus the buy-ins)/Investment (buy-ins added together).

5. Once again, I do not know about PokerRoom.

Hope this helps