Make a SWOT analysis for each option. Quantify EVERYTHING you can into personally objective and subjective values. Then A/B all of those values against each other. Then sleep on it, ask other people, and then return to the SWOT tables and try to add and simplify.

If you still have troubles after that, try to figure out what about either choice you don't know, and work to find it out with footwork and socializing, asking pointed questions, and paying attention to the things you want in life about people.

If that still doesn't tip the scale, it's probably because you don't know enough about something else, probably yourself.