The Peachtree Nova 300 output with either of the speakers you mentioned I would never had considered.
The Nova 300 has an 300Wpc into 8 ohms (24.8dBW), 450Wpc into 4 ohms? Heck of a source powering speakers that you have or are considering. I’ve always been a B&W user, with that Nova 300 I wouldn’t have considered anything less than the 703 S2’s or something comparable to their specs at a minimum..