Personally... I don't think there's an exhaust out there that looks a clean as the TRD axleback does. The tip just seems to "fit" the xB perfectly. Now I know that the major beef with it has been how quiet it is when you put it on... so just do what I did and remove that HUGE forward resonator, putting a glasspack in its place. I did a 15" glasspack myself and I think it sounds great! A good, midrange sound... not too loud, not too quiet. If you want it louder, a smaller glasspack will do the trick... quieter, a larger one.
The other benefit is having the rest of the exhaust tubing re-done to be a full 2.5" all-the-way through, metting up with the 2.5" piping that the TRD axleback has. Stock, the car has like 1.75" coming out of the back of the stock resonator (ouch!!).
Better performance, better sound, AND great looks. :D
Now I know there's a catalytic converter inside that huge, stock resonator... so keep in mind that doing what I've done would NOT be emissions legal.
| TRD axleback w/ 15" glasspack replacing "scuba-tank" resonator | K&N intake w/ AEM Dryflow filter | 4300k MobileHID | TRD Springs | TRD rear-sway | 18" Enkei RP03 w/ BFG SS All-Season | Optima Battery | Amsoil 0w20 |