I think there is is a common mistake that all of us low-stakes regulars make.
That mistake is assuming that all of the players at higher stakes are better than we are.
This isn't necessarily so -- they have more money, and they are able to take greater risks, and the regulars certainly are better players.
The problem is that when you take your first shot at the higher limit, you don't know who the regulars are
It takes time to find out, and to find out, you need to take a shot.
When you take your shot, you will put at risk double the money per hand that you risked at the lower stake, and this can be hard at first.
However if you play a bit tighter than you did, in the right places, and a bit looser than you did -- also in the right places -- you'll do fine.
Here are some things I noticed from my (failed) shots at higher limits:
Players steal more
Players defend more
Players are more aggressive
Players NEVER limp, and if they do -- esp from early positions, they are trapping.
Players play more suited connectors than in lower limits
Players play fewer A-rag type hands, unless suited.
That's all I can remember for now.
I would be nice if some real NL 100 players could offer us some of their insights too...
Standard ranges include