Centaur is the 2nd from the top of the earlier Campagnolo groupset, but to me it is about as nice as the Euclid (what was the top)
The earlier Camagnolo stuff is pretty burly. I find it cool, but I do not think desirability is at the same level as that from the later Icarus and in particular RecordOR stuff for most.
Personally I find 500 (euros, pounds, dollar - whatever) on the steep side for a complete Centaur groupset, but maybe it is just me.
On most bikes I do run XT m730 or DX. Also m900, Quarz, Campy and XC Pro in my stable, but if it comes to riding not much can beat m730 and DX. Great availability and great compatebility.
Oh ...and I did see that Serotta too. It was very nice