I just mounted a set of these Evoluzion ST-1s (215/45r16) on Dekagrams (16x8).  I purchased them from Tires-Easy for about $80/ea.  
https://www.tires-easy.com/tires/federal-tires/215-45-16
I've only put about 50 miles on them, and haven't really tested them at their limit, but I have to say I'm really happy with the purchase, so far.
Coming from the stock Potenza's on stock rims, I definitely like the feel of these better.  And the ride is noticeably smoother on 16's.  But like I said, I haven't pushed them that hard, yet.  I might try them out at an autox this weekend.
Here's a couple pictures of them right after I put them on (forgive the dirty car/tires).
	
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