I have an APR Carbonio (I think it is). But only because it was on the car when I bought it. Otherwise I'd have gone for a Revo, if I had gone for anything at all.
I will admit, it is a nice looking bit of kit in that engine bay, so I'll be keeping it, the car also benefits from a carbon fiber engine cover anyway. So does look good.
I will say though, there is a lot of chat on some of the facebook groups where people are going for that Ramair thing. I don't see the point personally. It's only £50 cheaper or something than the Revo, and the tuners (well, R-Tech in particular) suggest that there is no better intake out there for making numbers. Now there is more to life than numbers, for sure. But for the sake of an extra £50, when you're already looking at spending close to £200, it seems a no brainer to me to go for the more efficient one at gaining numbers.
TDLR: My money would be buying a Revo. But as I have an APR one already, I wouldn't dream of spending money again on this side of things.