Just received the lsr305 today. The Proacs that usually use were mistreated the other day. So the lsr305 fill in until i get new woofers from proac.
Very impressed with the 305s so far! Not in the same league as the proacs of course. But I think jbl is right about the sweet spot feels very wide.
I dont think you really need a sub with them unless you want to all the way. They definitely play two octaves further down than the ns10s next to them.
My Proacs has a lot smoother top end than the 305s, but at this price I ain't complaining.