Most Helpful Guy
How about leaving it to logic and reason. Make the list with all the pros and cons about each guy, everything, use as less emotions as possible, in fact get your most logical cold friend to help you out with this.
Then make your mind clear and decide what you want in the near future and in the long run.
Make all of this on your own, do not involve those guys in this, take a weekend for your self to work that out.
When you've done it, start a trial period, say between 2 and 4 months. You can do whatever with the guys but remember your lists and plans and at the end of the period you will know how you get along with each one, and take your decision.
Its going to be hard but that's what I would do.0