Wired or Wireless bike computer? I have bought a new pair of road bikes.

I am a triathlete (Sprint mostly) and I am interested to know, what computer should I buy now? wired or wireless?

I mainly do not like wireless things (I don't do wireless accessories - they tend to fail on you when you most need them).

The reasons I may consider which type to buy will be:
- Price (wired usually lower)
- accountability - (wired will less fail)

I can only think of why NOT to buy a wireless computer, and would like to know your inputs as well please.
I've only ever used wired computers because they seemed more reliable. However, I have a friend who uses a wireless computer.

The biggest problem I've observed is that when he starts riding after a rest he has to make sure he 'wakes up' his computer otherwise it won't track the ride until he does. He's forgotten (and lost ride data) often enough that this is a big dealbreaker for me.