Big fan of Sonus Faber. From their modestly priced speakers all the way up the chain they deserve a great amp.
I just gave my brother my Concertos and he is loving them. My Dad has a pair of Elector Amatar III and they are pretty amazing for their size.
Do they even make a bad speaker ? I don't think so....
I often take ghdprentice's advice with respect to upgrades and such. He is usually spot on with advice. His best advice I've taken, avoid lateral moves. It's good advice that has made me save a little more, wait a little longer, maybe buy used .... but rarely have buyer's remorse.