Nak PA 5MMKII Bellles 150A HR Rotel RB 1070? Which one

I am looking at three different amps in my area and price range. Say $250 to $450  Belles 150A Hot Rod, Nak PA5 MKII, Rotel RB 1070. I have a Rotel RC 1070 preamp so that is why the Rotel is in the mix. Cables are  all Analysis Plus and speakers are either Vandersteen 2C or  Infinity RS 2.5s.  I owned Rotel gear 2001 -2006  (before I moved on to a perfect but soul less digital Bel Canto) and always thought despite its flaws the Rotel  gear was pretty musical.  I have heard it said in  more then one spot the RB 1070 is a bit more clinical then the older stuff but who knows what cables were being used  Have never heard a belles and have not heard a Nak since I worked in the biz way back then.  Any synergy issues here with the Rotel preamp.? which by the way i think is better then the early 995 and 990 which were also good but more veiled.

The question also is this stuff going to outdo my Music Hall A 50.2 integrated? No slouch in itself.