+1 I have had great success with the ISIS and the Octalink version of FSA cranksets, and they can come amazingly cheap, even on the eek!bay.

Not only that, the best crankset I've ever had, and the lightest, was ISIS, a Stronglight Pulsion. The "newer" version requires a proprietary bottom bracket, which is just another example of a french firm shooting itself in the foot. I do count weight on my modern bikes, and one Pulsion, with an Omni bottom bracket, was 505g total. The other, with a Deda bottom bracket, was 502g. Extremely stiff crankset, extremely smooth.

I like the FSA Gossamer, coming in both silver and black. Ritchey used to do that with an Octalink version, as well.

If you go square taper and want a reasonable crankset for it, the FSA Vero is not bad at all.