Have been using Campagnolo components since 1992. I have to say that I have not use any other brand in regular basis and my opinions may be biased.

1) Campagnolo currently produce 11 speed group and 10 speed group:
Super Record, Record, Chours, Athena = 11 speed
Centaur, Veloce, Mirage = 10 speed

2) People say Campagnolo Veloce = Shimano 105 = Sram Rival , Centaur = Ultegra = Force, Chorus = Dura Ace = Red, and Record is in the league of his own.

You can buy Veloce group from England for about US$522 + $25 shipping from:
http://www.ribblecycles.co.uk/groups..._GS&type=RIBMO

But you still need a new rear wheel or hub body though.

For more information on Campagnolo, you can go to www.campyonly.com