I am not sure if we were given enough informaiton about
your present status. That is income, size of current
company, your goals, your background etc., but I think
it is best if you first become happy with what you have
before seeking something else. It sounds like you are liked
and to some extent respected in your position, you will
most likely lose that in a more challenging/different
environment, remember when you weren't the guru?

For me personally I finally realized that challenging myself
became a hinderous rather then a boost. I would challenge
myself based on others standards or requirements rather
then my own.

And remember, just as TMTOWTDI, there is also TOWHDI
The One Who Has Done It, that is taken action and solved
the problem. We all strive for perfect code and as you
improve your skills you will undoubted go back and
improve on your past code.

Good luck in the eternal question -
Should I stay or should I go now?
- The Clash -