I'm a fellow cheapstake, so I buy bikes to take parts off of. I have a road bike at them moment I paid $80 for and the parts on it are worth $1000.
To your question, Nashbar are rebrands but either very fimilar or feint rebrands, so the crank would be a well known crank that sells around the same price. Nashbar just collects the parts and labels them for better sale.
And this is good, rather then search amazon or ebay for 4-5 dealers with the same set up, nashbar is the same and same quality
Example: Cheng Shin Road tire with kevlar
Same as: Nashbar Road plus 2
but nashbar is cheaper, and comes with a nashbar sticker on the side.
Go for the FSA though, better rating - read the reviews and take stupidity into question- and the FSA is heavier but would seem to be better quality