On paper, it's a great move. Don't get bogged down with the wave of people claiming a 20% increase when they jumped jobs, a lot are working in toxic environments and are going to either be fired when the recession takes hold or they're going to quit and go back to their former employer.

I think you know it's a great opportunity for growth and pay, you get a better retirement plan, you get better salary adjustments every year on top of bonuses, and better overall pay. The only factor that you need to consider is, "will an 11% increase be worth the loss of a workplace I like to work at?". The value of finding a great employer and work environment is paramount, and it's a question only you can answer.