The Saikou cans are big in the mazda community. Lots of the guys my husband hangs with have them and are all pretty jazzed about them. They really aren't anything super special, but they are pretty decent.
if you want pretty, SURE motorsports makes a pretty one.
Oil Rig
but in the end, I have done the gatorade thing and even the Greddy and been happy with either with a little metal mesh.