[gexla]

This depends on a lot of factors, such as age, being in a position to be able to take a risk, location, etc. If you don't have a lot of baggage then I would consider taking the jump to make a bit more cash and make sure I don't stagnate. The opportunity to learn something new and try a new experience would be enough to get me to jump.

For a web developer, 31K is not a lot. You probably wouldn't have too difficult of a time replacing that level of pay, especially if you are good.

Key words for me were "cozy" and "super-simple." I would leap at something more challenging for more money.

As for screwing your old company, just let them know well ahead of time. The company will manage. I'm sure they have had many worse disasters.