Hello! I am 27 and I'm thinking of a career change too. I'm currently in finance, making $62k ( I live in SLC, UT). My friend just landed a job for $80k, which makes me think that's my market value come next summer.
I've thought about going into computer science, as it is a high paying job, and I think I would like the idea of solving problems and creating programs.. Have you looked into CS? My worry with CS is I also enjoy talking to people... I think you would have no customer interaction... But you could be a programmer for a couple years, then turn into a program manager, and have the best of both worlds (technical + customer interaction).
An MBA does make money. You can land a $80-$100k position, depending on the quality of school and such. You would have to look a little further into an MBA, as the you emphasize on something (IT, Sales, Finance, Account).
Good luck on finding your next move. :)