Manley snapper vs Atma-sphere M60

Trying to figure out the best way to go between these 2 amps.  They'll be lighting up Tannoy Kensingtons.  I play mostly rock on CD's.

Any thoughts/comments......thanks.
I agree...there a few amps I heard that sounded so nice.Like JaFox  mentioned the Cat JL series,Jadis JA series and the Atma Sphere M60.Cheapest in price is the M60 though and I could live with those for long time.
I'm running my Tannoy Canterbury's with M-60's and they sound incredible to my ears with all styles of music.
I've owned M-60 for 2-3 years and I love them.  They may well be the last amps I buy.  I've heard Snappers only once, and not in my system, but I don't think they are in the same league with M-60's.   One caution however, is that the M-60's don't lie.  They are not forgiving of bad recordings, and they are not forgiving of bad digital.  I don't play much rock.  Mostly classical.   I got in the mood for the Stones a couple of nights ago, and it was all I could do to get through Beggars Banquet.  BTW, I agree with @phantom_av on the upgrades.  Also, be prepared to do some experimenting on getting the 6SN7s right.  Makes a big difference in my opinion.   I would expect the M-60's to be very nice with the Kensingtons.  
He said snapper. 🤗