Sugino 75 are well thought of on these boards: stiff and well cheaper than DA or Campy Pista.
Specialites TA make a beautiful track crank that's about the same price, available at
Peter White
and at
Bicycle Specialities
I'd say go with the TA crankset, simply because it's gorgeous, uncommonly seen, and because TA only makes really nice parts and has been doing so forever. Also, TA is known for making really nice chain rings. I'm sure the 75s are great, but just aren't as nice. And for 2 bills, I couldn't live with an okay looking crankset.
Another option, at that price, would be an old DA (square taper, not octalink) track crank, supposedly very stiff. Harder to find NOS, and I would hesitate to spend real money on used cranks.
As for mechanical problems, you should be fine if you've got a decent chainline, clean chain, well adjusted BB, and properly torqued chainring bolts.