Here is my take:
Lots of opinions on the topic, so it comes down to a personal choice. Here is my personal choice:
Both work fine
If you fish around structure, (such as the over the tubes at the CBBT or HRBT) use wire
If you fish in open water, use braid
Do not fish both at the same time. If wire touches the braid, it will immediately cut through the braid
Do not switch a rod or reel from wire back to braid; most likely, you will have nicked a guide or roller somewhere. If you must switch, run a cotton ball or pair of nylon stockings over every surface the braid may touch. If there is a nick, you will see or feel it in the cotton or nylon.