JJ, welcome, and be assured that there's no way that you won't be thrilled with the M60s. On the receiver, I'd like to suggest that you may be interested in getting surround sound(e.g. QSs)for both music(using DPLIIx)and movies sooner than you think. In my view getting a multi-channel receiver with full surround features is a better move than getting a 2-channel unit, even if you don't use its full capabilities at this time. An excellent receiver in your price range is the Pioneer 1014, available for $350-$400.
