I now drive a 1500 Silverado after talking to my mechanic.
Originally, I wanted a f150. My mechanic said he liked it except for a couple upkeep flaws. The main one was an issue with the oversized spark plugs. Apparantly they break all time time and you have to get a specialist to remove them, costing over $800 a pop.
I also noticed there were a lot more f150's available on the used truck market, and rarely any silverados. That sort of indicated to me that more consumers kept their silverados over the f150 counterpart.
But I wouldn't buy either truck unless it had a purpose, for towing or for some type of work, both of which I do.