[browna]

With kids, you'll want the crew cab in any model (called Supercrew for Fords).

All the below, assuming you're looking at new or nearly new:

The Ford has the most amount of room in the back, seats folded up or not. Chevy next. Dodge 3rd, and the floor isn't flat as the other 2.

Interiors are probably ranked Chev/GM (as it's new this year), Ram, Ford.

New F150's (aluminum) are coming in the next 6 months.
Chev/GMC are all new for 2014.

Engine options are pretty similar power-wise and economy wise and bullet proof.

Ford has 5 trim levels in Crew Cab, Chev/GM 3,

I'd go with Chev/GMC or Ford (myself actually trying to figure out if we are going to move back to a truck to one of our vehicles). Even though the current Ford is on its way out, the room inside in pretty good and its a solid, no nonsense truck. However, once you start adding more interior options and creature comforts (even though they are being liquidated), you are forced to step up in trims and it suddenly becomes more$ for less value than the Chev/GMC, which, as said, are all new for 2014.

If you're going to look at something a couple years old, the Fords have been pretty much the same looks inside and out since 2007 with the 2011+ being identical in looks and engine to the current ones. Though I am a GM guy, the previous GM trucks were nice, but for space the Ford had more to offer.

If going new, and as cheap as possible, if you're fine with cloth seats and basics, Ford XTR all the way. If going new but would like a bit of a step up in comfort/features, a mid level GMC/Chev has more features given the newness so IMO, more value.

All sorts of variables depending on what you want so won't speak more on that, you'll have to go sit in them and figure the budget you have.