I've got PosiQuiet semi-mets (and of course the stock 12" size) and I love the stopping power. The PosiQuiets have a nylon/teflon shim on the back of them that keeps them from squealing and you don't have to use the gel. They're quiet with a lot of bite.

One thing I noticed with the semi-mets is they have to warm up to get really great braking. Cold they do well, but warm the car feels like it'll nose dive with a tap.

I like those R1s. They're pretty popular with the Impala owners and I've been wanting to get some. They look great from behind those rims!

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2004 Impala LS - got some mods
NAIOA Moderator

Making you think twice before picking on Impalas