I vote for monoblocks. I run a 'vintage' system and I run (2) MC2100s as monoblocks, fed from a Dynaco tube preamp. Very nice sound (at least to my ears) that combines a bit of tube 'color' along with 210 wpc of clean Macintosh SS power.
Plus, as a few others have said - if you go with a stereo amplifier (again), you will always be wondering what the monoblocks would have brought to the table.
Don't wonder - find out!