Parasound P5 + A23 vs Musical Fidelity M5si

Was planning to buy a new Musical Fidelity M5si integrated but just saw a good deal on showroom demo Parasound separates, the P5 preamp and A23 amp.  Any thoughts on which option is better?  Speakers are B&W 804's and source is a Naim Uniti Serve through a Naim DAC.

Thanks for any advice!

wsomers