I have been using a couple of CT5 tools for as long as I can remember and they have stood up to hundreds of chains and can't recall ever having to replace a pin (although I keep spares just in case).
I keep one of them hung on my shop apron all the time.
These are pretty old Park models so perhaps it is another one of those things they used to make better... we have these as well as a CT3 and CT7 at the co-op and because these are commonly used shop tools we replace a lot of pins due to user error.
I another person who is not tied to Park Tools and will use what I consider to be the best product at the best price and if you want my Sugino cone wrenches you will have to pry them from my cold dead hands.
Park cone wrenches are made of cheese.
My cable and housing cutter was made by Snap On... it is probably the best cable cutter I have ever used.