RJS Originals all the way for me, made by a vet from his house. To me they look the best because they flow with the lines of the bike. It's not a one size fits all, they are make and model specific. First thing I bought for my SG and they really work.
Here's a close up of my RJ's, He put the jeweled studs on mine to match the fizz in the Root Beer. And it does! I get compliments all the time, and they work, too.
I thought about getting some kind of deflector for my RK. Before my stage 1 and dyno tune, that sucker got HOT!! So hot I hated riding it, especially if the ambient temperature was anything above 70 degrees out.
But now, I can happily say it isn't needed. My bike just doesn't get that hot any more. It amazes me how much cooler these bikes run when tuned properly.