New exhaust for an X-Max

I'm thinking of replacing the standard exhaust but not sure where to go in terms of cost and performance, durability etc. my local guy at Yamaha blade, recommends the Akrapovic...gotta say no to that one, too pricey anyone have suggestions?

 

4 stroke exhausts are pricey no matter what, this one seemed cheeaper than alot I saw though
http://www.ebay.co.uk/itm/53508ST-E...20?pt=UK_Motorcycle_Parts&hash=item20dc18f720

 

Id seen that one and it certainly isn't going to break the bank, I was just looking for opinions on whats out there really, thanks for the info though