Floor standing aren't aways better. It completely depends on the speaker. I have heard tons of monitors sound better than their floorstanding brethren. I'm sure I'm not the only one who will say that. I do like full range better, but floorstanding doesn't mean full range either. There can be many trade offs by adding the much more baffle. Just ask any speaker designer. There is a designer in this thread who has only monitors (I think he only has stand mounted). I'd honestly would love to hear his take on this as there must be a reason he went that route.
