Dsper, I don't think you should rule out the 3.7's based on concerns about room size. The ideal is always to have an in home audition, but that isn't always possible. You ought to be able to get an in store audition with a room that is at least a similar width, and that should give you some idea. Personally, I find I like speakers closer together than most people do. My 1.6's are 49" inside edge to inside edge. I like the strong center fill I get with them close together. Maggies tend not to have much trouble with side wall interactions, so your 15 wide room may be fine. The open area you have behind your seat will help if anything. I haven't heard the 3.7's yet, but I have heard the 3.6's at less than 13 ft. They were poorly set up, but I can say I did not feel I was too close to the speaker. I'd say, do your auditioning carefully. If you fall in love with the 3.7's, go for it.