I'm looking to purchase a new speaker setup, primarily for 2-ch music, and secondarily for 5.1 HT. Last week I listened to a pair of Paradigm Reference Studio 20s, which have a list price of $1300. I tried a wide range of music, and they performed very well for almost everything - beautifully clear sound on acoustic guitar, quite punchy on dance music etc - but a little dissapointing on the most important: heavy rock - specifically Led Zep and Muse. Just seemed to miss alot of the power on the guitars. This could be the quality of the recordings, so i'm going back with better versions tomorrow to retest, but in the meantime I wanted to ask if there were any alternatives worth considering in a similar price bracket? Bear in mind I'll also need a corresponding center speaker when I buy, of similar power. Receiver is an Onkyo 608.

Thanks in advance!