Ordered a set of Alloy Gators for my 19" rims about a week after getting the car. Took a while to get here, as they ship from over-seas.
Installed them last week myself. Took a couple of hours total: about an hour for the first one going slowly and figuring it out. About 20 mins for each of the remaining three. If you are comfortable changing/inflating a tire, and have the basic tools necessary (valve stem remover, rubber mallet, cutters, & jack) they aren't hard to install yourself.
I went with silver to blend in to the rim. Other folks had reported that the black ones made it look like you had a larger tire, somewhat offsetting the sporty look of the low-profile tires. I'm glad I went with the silver, you hardly notice they are there once installed.
A good price for peace of mind. Oh, and the offer for 10% off (use TELSA10 coupon code) is good through the end of July, I believe.