I recommend the asfir ones, light easy to install. You don't need to remove for an oil change either if you go with an aftermarket drain plug! I have the full set from bumper to tank on mine and love them!
The only reasons for that cat to go out this quickly is due to an engine out of tune; most likely running rich, or the honeycomb structure inside was physically broken. They don't just go out on their own.
There is an easy way with zip ties, but yes cutting it is the easiest way to remove it. They are supposed to be single use, I just couldn't get a new one.