Obviously, I'd feel a lot better with a 5-year warranty than a 1-year warranty. While drivers rarely fail, the same can't be said for the amplifier. And if your room isn't open to other rooms, your 1,600 cu. ft. room places just outside a small room volume, so any capable ported or sealed design should perform very well within your boundaries.
Music area: Magnepan 3.6, McIntosh MC2205 & C48, SVS SB13-Ultra, Oppo BDP 95 and assorted equipment.
Movie area: EMP Tek R5Bi, PSA XS30, Denon X2000, Oppo BDP 83.