B&W 803 D3 speakers - which amp?


I just upgraded my speakers to B&W 803’s and currently have a Mcintosh MC207 powering them for 2 channel music and 5 channel home theater...sound is quite good from the MC207. The question is...how much difference will it make if I switch to a 2 channel amp like the MC462?
mluters
I am using the Classé Delta 2300 stereo  amp bi amped with 2 channels of the Classé Delta 5300 5 channel amp on my 803d3’s.  Very happy with the sound.
I just replaced my MC205 with the MC452 and MC303.  

I have 803 D3 fronts, HTM1 D3 center, and 804 D3 rear surrounds.

i have a Lyngdorf MP-50 - and I should also add that I have 2 SVS SB16 Ultras.

i can absolutely assure you that the MC452 makes a material difference in both 2 channel and home cinema.

B&W speakers should be given maximum amplification.
I have a demo setup for today with my local dealer for both the MC452 and the MC462...I will report back
He has a used MC452 for sale that I can take home and try for 2 weeks and the MC462 is at his showroom