In my opinion it's excellent. I was with Madasafish for a year who messed up my connection from 2 meg down to 1 meg as "that's all BT said I could get" even though I wa on 2 meg for the 6 months previously ???
I've been with Sky BB since just before Christmas and get around 5 megs with a 40 Gb cap (5Gb cap with MAAF). Not the fastest but I am over 3 miles from the exchange and saving £13 a month to boot.
My connection dropped out at midnight of the evening of the 'switch over' and when I checked my emails in the morning it was up and running on the Sky connection.
The router is literally plug n play as your details are in the router when you get it.