I haven't upgraded the horn (yet) but do have it definitively brought to mind every time I have use that weenie sounding horn. The fact that I don't have to use the horn all that often is why I forget about it and that's possibly another reason why I haven't exactly justified the purchase of one either.
That said, if you find something you like, send us a link.
2012 Cross Country Tour
Stage 1 with RPW Slip-on Mufflers
2" Pullback Bars
Ness "Rad" Mirrors