The LS50 is a very good standmount speaker, and many people enjoy them. I have the powered version, LS50W2, and upgraded from the LS50W1, the original. For listening to the widest variety of music, pairing them with a subwoofer is recommended (the mid-woofer is only about 5 in, so the low end is limited.) I have used the REL T7i which does very well in that combination. (And I can recommend their Arrow wireless connector for use with your amp. Having used Peachtree integrated amps six years now, you should get excellent performance from the combination. I have not used that NAD amp, but I imagine it would do fine also.
