i have heard bad things about the cable ones.
what i would do if i were you is get the summit brand manual cutouts. mine was like 25 bucks and it is a very nice piece. i got it welded in when i got my y-pipe welded in and the catalitic converter removed. so it is right where the cat was/is supposed to be.
summit has them in 2.5 and 3 inch i have the 3 inch one and i love it where i have it mounted it is not hard to open it and my car is very very low so it would be alot alot easier if it was at stock height.
but really it all depends on what size exhaust you have right now. if you already have a catback on it then the piping is probably 3 inch. if you have 3 inch pipe already then get the 3 inch one that has the clamp on style so the tubes are enlarged and if you want to install it yourself all you have to do is cut a section out of your pipe (i would use a sawzall but if your chuck norris a hack saw will work) then you just slip the cutout on and tighten the clamps down. here ill make it easy for you and post up the link.
Summit Exhaust Cutouts: SUM-670137 - summitracing.com
hope this helps good luck.