Everything is a compromise. Are you looking for street, track? If you stay with 17" wheels, the options are limited if you must stay under 16 pounds! The only wheels i know of would be the OZ Ultraleggera at $270 per wheel. There have been comments that these are easy to bend in "pot hole" country. If you can go to 18 pounds, lots more options. Easiest way to save on weight is to go to 16" or 15" wheel. I suggest you look at TireRack.com to get a sense of all the options.
If you live in pothole country like I do please stay away from Sparco Assetto...my 17"s are all bent. On friday wen over a lump of some kind on the hwy, didnt feel like a pothole but like they tar'd a pothole and filled it too high, couldnt see it because I was doing about 80mph and it was night time. Anyway bent my front right rim and all the air came out. Im gonna down size but cant find some nice good cobstruction wheel for a decent price. No more gravity cast wheels for me tho, will be looking for low preasure cast like oem manufacturers.
I have them wrapped in 205/45/17 General Gmax tires and these tires are soft as hell, no matter the tire pressure. I understand no rim is invulnerable to potholes but after that last one im convinced these wheels are like butter soft.