Re: 954 exhaust
I think the best thing I like about my Hindle is that there isn't a riveted plate or anything on the end can like on Yosh pipes...and I can just take the sticker off and make it look like stock. Around here, with LE sometimes handing out fix-it tickets just for having a different can on there, that's a really good thing.
As far as the Akrapovic cans go, the best thing I can recommend is to shop around for it and see who can get you the best deal. Internet shops might get you a better price, but if you have any problems with the can, a retail shop with good customer service can't be beat if you need to return it or anything along those lines. Of course, I'm kinda spoiled...I work at CycleGear. I know there's one in Smyrna, but I don't know if there's one in your area or not.