In a bedroom I think the EP400 would be the better choice due to its smaller size which might allow you to try more placement options within the room. The EP400 and EP500 will probably be a big improvement over the EP175.

I am suprised you say the EP175 was lacking for music and fine with movies. I would have thought the opposite.

I’m armed and I’m drinking. You don’t want to listen to advice from me, amigo.

-Max Payne