LeBra is the best brand name. Plenty of deals online! I found mine here on the .org actually! The bra is great for protecting the front end against rock chips and is beat for lots of highway miles. You need to take it off to clean regularly and make sure it's clean when you put it on. If you park in the sun a lot beware of potential paint fading since the area covered by the bra won't have the same sun exposure...
I have a Colgan brand on mine and I always get complimented on the fit of it. I got mine from Craigslist and it was brand new. Here is a link to their site and pics of it on my car. Colgan Original Bra - Colgan Custom
It fits a lot better than the perfect fit one, and it doesn't make it look like your car is wearing a thing... unless you like that sort of thing, than perfect fit is the only place you can get the thong bra.
Check out my beetle thread in my signature for more pics of the clogan bra in action.