I am looking at buying either a Hard Krome or other baffle and having a muffler shop set me up with the right size pipe to hold it, orrrrr a supertrapp universal 3".

Opinions? Reccomendations?

Sure, I'll chime in.  I bought a pile of jets, and a dynojet needle kit, and then I ripped the pile of vomit Jardine muffler off my head pipe that came with the bike.  (Sorry to all you Jardine fans out there, but the thing sounds offensive and performs like something off a milk truck.) I got some pipe that was the right diameter to slide over that head pipe, put a bend and a sidespout to it, and welded on a bracket with some nuts welded in place to run bolts and hold the whole contraption on.  Got it dialed in for jetting, and took everything back off, and header painted it flat black.  And EVERYONE asks where I got the badass pipe.  Give it a whirl...I'm running no mufflers at all, and it sounds perfect to my ear...but I'm a little bit redneck.

I did the Supertrapp.( 4" megaphone) If I had it to do over I might go with a real "LowBuck" approach & just see if it gave me the performance I was after. I Like the sound of it fine, the look is better than stock to me, but, the real slim exhausts look better on such a small built bike, (My opinion) What Govmule proposes sounds interesting, & I sure like the look of a dyna Muffler on it, or a turn out.There are inexpensive options that have given good results. The sellingpoint for me on the Supertrapp was the tunability. I still like that aspect, but it seems others have achieved the proper tuning on the carb, gotten great performance & spent a good deal less. Good luck.

I haven't dynoed it at all, but it seems to pull much harder than the Jardine, especially up in the revs.  I know we're not talking a 16,000 rpm GSX-R here, but sometimes if I'm in a twisty, I want to wrap it out some and shift after the turn...and the darn thing was practically asthmatic before.  Now, if you aren't wringing the daylights out of it, it does pretty well.  

I just didn't like the price of the exhausts.  My bike's got nice custom paint, some go-fast goodies...it's worht maybe two grand.  I'm not putting ten percent of the bike into an exhaust system.  I was after performance, but I couldn't believe how terrible that Jardine pipe sounded, not to mention it was nothing more than a chrome glasspack.  I was unimpressed, to say the least.  I am certain someone out there has an exhaust that produces more HP than mine, and I've not played with the SuperTrapp system, but I think dollar for dollar I did really well.