i say go MH hang up a nice pendent, im very happy with mine ive done T5 and yes the color combos are nice but i love the growth im getting and the "SHIMMER", also with a open top i dont have any heat issues i dont even run any fans at all not even in my fuge, temp is always at 77-78, remeber my tank is the same footprint yours is just 1 inch shorter, you need to swing by and check it out