The LCR is 90 db efficient so that is towards the low end of the spectrum. Look at some of the stereo/Home Theater mags for reviews. Check out all the major manufacturers for there various products. I have Klipsch in my main system and they are very efficient. Try Aperion, Paradigm, Polk, Yamaha and Sony for starters and anyone else you can think of. Are you going to use your LCRs as the mains or are you looking to go bigger.
Model 990/7500/Magnepan 1.6 QRs/Technics SL1200 MK2/Aperion S-12 Subwoofer/OWA3/Sony NS75H DVD
Large Advent Loudspeakers/Panasonic Viera 42 inch/Onkyo HT-RC260/Sony BDP S590
Home Theater System
Onkyo PR-SC886/7125/Klipsch RF-82 L/R,RC-62 center, RB-35 SR/SL, BENQ HT1075, Outlaw LFM1-EX/OPPO BDP-83/Directv
Blue Jeans and Monoprice interconnects
APC H15 Power Conditioners