Looking for a little more advice here on my single speed build. This time I'm talking cranks. Most of the parts going onto this frame fall into the used-but-not-abused category, and I'd like cranks to be the same. Unfortunately, used singlespeed-specific cranks are few and far between in the classifieds and on eBay. So maybe I'll go non-specific.

So... Any opinions on the ss-specific cranksets out there? Truvativ Stylo SS, Race Face Evolve SS, Bontrager Race Lite SS? Who else sells a ss crankset?

What are the disadvantages (if any) of buying a standard set of cranks or crankarms and just using a middle ring and bashguard?

And finally, I'm only 5'8". Should I still consider 180mm arms, or stick to 175mm?

Thanks in advance for any and all advice/opinions/ramblings you all have to offer.