I used to be a floor stander only person myself, but a few stand mount speakers had opened my eyes. I now use stand mount speakers in all three of my setups. Not only are they less expensive than the floor stander of the same product line because the cabinet is much smaller, but they also have stronger cabinets unless the floor standers are heavily braced, and most medium to lower priced towers are not. I also get just as much dynamics in my setup as I did with any floor stander. I also like being able to use stands that put the speakers at the exact height I want them rather than having to live with however tall the floor stander may be.
Case in point, I run JBL Studio 530's in my main setup, I paid $479 for them (a complete steal for this speaker by the way) and the next model up, the Studio 570 is twice the price, and it's only about 32" tall which is way too short in my opinion, so you'd still need to use some sort of stand between 10-12" or so which kind of defeats the purpose. Of course this is just one example, and the other towers in the line, while continuing to get more expensive, are taller and don't need stands.