I been recommended Kef Ci130CR for myself, I haven't heard them but will see if i can demo a set somewhere before i take the plunge. Slightly over your budget i think. Also a lot of forum members i can see are using the monitor audios ct265 but think there cost more than the kefs.
I was looking at the Yamaha ic600 or 800 as they seemed a really good price for a pair.. £120 and £160 respectively. Not sure if they are good though.
Not sure myself as i am going to be in the market for some myself real soon, Hopefully someone will come along and may know a thing or 2 about these too.
Did you end up getting any ceiling speakers? I am also looking at the kefs now. Hopefully someone can advise if they're any good.