Unfortunately I don't know anyone personally who plays those models of Martin, and I can't really figure out what the major difference is between those 2 models. As for the Martin vs Taylor, at this price point, they will both be very comparable guitars. If possible, the best thing to do would be to try out both guitars and see which feels and sounds the best for you personally.
Hope this helps, good luck with it!
Mike
Keep rockin!
Mike Olekshy
GT Guitar Coach