Space really isn't the issue, so maybe the towers are the way to go.

Is there a radical difference between the two speakers in terms of sound? I have read that the tower has more base, but maybe its looser? I was going to put the others on stands anyway, so I guess I might as well build the tower.

Which brings me to material. MDF will be heavier than particle board, but isn't it stiffer, and stiffer is better, right? I am thinking the sound characteristics will probably be unnoticable to my untrained ear, but I guess I should start with the "right" material.

Thanks,

Brian