The P1's are also a projector, which gives you a fairly narrow beam of light, albeit generally brighter and more controlled. But not everyone wants that. It's like going from a flood light to a laser...smaller beam, but more intense and focused.
DEPO lights are just a brand of OEM replacement lights. They tend to be high-quality but way cheaper than actual OEM lights. They are a direct fit, no special brackets needed. Just look up your year/model truck and depo fog lights and you'll find a bunch.
PIAA bulbs are good bulbs, but if you want max light (and nowadays cheaper light), try a set of 35w HID's. You can get an entire set with everything you need from DDMtuning.com for $45 or something like that, which is probably cheaper than most "high" quality replacement bulbs.
DEPO lights are just a brand of OEM replacement lights. They tend to be high-quality but way cheaper than actual OEM lights. They are a direct fit, no special brackets needed. Just look up your year/model truck and depo fog lights and you'll find a bunch.
PIAA bulbs are good bulbs, but if you want max light (and nowadays cheaper light), try a set of 35w HID's. You can get an entire set with everything you need from DDMtuning.com for $45 or something like that, which is probably cheaper than most "high" quality replacement bulbs.