I have a CG171SF. Great all-purpose instrument. Body is as deep as a classical but with lower action. Build quality and finishing is excellent. I upgraded mine with a bone saddle.
I've been studying flamenco (the real stuff) in conjunction with my classical studies. The CG171SF is, IMHO, a best-buy in the $350 range. It drops to about $305 on sale days.
The Cordoba F7 is a step-up in tone for $500 ($425 on sale days) but the one I've played and examined did not impress me with its workmanship. You can read my review details
here.
At the $475 to $500 price-tier, I'd rather spend my money on a used all-solid flamenco guitar built by a reputable luthier from Paracho, Mexico.