I have 2 F3's, a C2, and 2 12SUB's. I am thinking about getting rid of the F3's and the C2 and upgrading to a set of Emotiva 8.3's mains and a 6.3 for center. I really don't have any complaints about the Klipsch's, just had them for a while and I want a different setup. I already have some ERD-1's. I can say they can be cranked up pretty loud and still sound perfectly clear. I kept my treble turned down a bit because the horns can be a little harsh if I didn't. I originally ran them off my Onkyo DS787 but the interanl amp died so I switched to the UPA-7. The UPA really woke the F3's up on the bottom end. The F2's have a smaller woofer the the F3, but I think the horn is the exact same. Anyways if you decide you don't want F3's instead of the F2's, send me a PM. I also went with 2 subs because at the time I wanted a lot of bottom end, but the Klipsch sub is pretty decent if you place it in the right position.