I would suggest the following...
If you buy a cat-back: Stainless tips are the way to go.
If your not mechanically inclined or don't want to be bothered with it: Buy the cat-back and have some one install it for you, welded of course. It's not that expensive.
I have a Magnaflow system but I had Mac stainless mufflers installed. Just a sound preference for me.
Again, just opinion...and experience.
By the way...I have an original TAMA rosewood piccolo snare drum for sale, new condition...Had to put that in there
Cliff