I recommend Bosal for two reasons.
Undeniable quality.
AND, while I have the FocusSport, I had to bore the holes in the flanges a bit wider to get the bolts to line up straight w/ the cat and the rest of the exhaust. The FS piece was originally designed w/ their "Race-Header" in mind. The bolts are closer to the piping than the stock cat, or most other aftermarket designs.
The FS piece is good, but I'd say save the work.