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.
Snell used to be a very big name in speakers many many years ago. in fact the current Audionote speakers are fully inspired by them( and have the rights to the design now).
but am really not sure of them these days..hardly hear about them other than in HT. In fact it went pretty down in the Audio chain after the death of Peter Snell, the founder who is one of the giants of audio
So while Macintosh is a definite thumbs up..you might be able to do better than a snell...but of course if you like the combo and feel its moneys worth no reason not to go for it.