I've owned Pass Labs XA100.5 monoblocks, a VAC Phi300.1A amp with a VAC preamp and recently auditioned a $30k Burmester 911 MkIII amp and none of them beat my Devialet Expert 200 for sound quality with my Rockport Altair speakers with power to spare.
The Devialet is the ultimate integrated as it contains a DAC, pre-amp, amp, streamer and phono stage, so you'll save $$ on power and interconnect cables. Even though the Devialet 200 lists for $9,000, there are some pre-owned units on A'gon for as low as $5,500.
I can't speak to the synergy with Maggie 1.7s but I used to own 1.7s and I believe the Devialet class A/D hybrid amplification should mate well with the Maggies. You'd also have the advantage to add a second Devialet 200 to deliver 400 watts per speaker, but I doubt you'll need it.
Hope this helps.