When I was shopping for speakers a few years ago, I auditioned B&W N804 using Macintosh int amp (I think 6900). They sounded great. In fact, the dealer then connected it to drive the N800 and the sound was top notch. It was too expensive for me and so I did not buy it. Mcintosh amps have good resale value in the used market and they are rock solid. In audiogon and ebay you can see decades old macintosh being sold.
I have never listened to Snell. So, can't comment on them. AFA value for money, it is entirely up to you to decide.