[BrentRitterbeck]

It sounds like there are two things at play here: (1) You really want to work at this new offer, and (2) the new offer would net you more money.

With respect to (1), your work is going to be the best when you enjoy what you do. You state that you are content where you are now. Does your current job get you out of bed in the morning? Do you wake up wanting to go to work? Would the second job get you out of bed in the morning? Work on the thing you are most passionate about.

With respect to (2), employment is a two-way street. You have every right to cut off your employer as your employer has the right to cut off you. I've been through two rounds of cutbacks. I got hit once. I don't believe in company loyalty at all. You have to think of your career as a business. If all else is equal (in this case it might not be), and the pay is better, you should go for the higher pay. Don't fall into the trap of letting your employer "own" you.