Are you looking for panels (modules)? Or mounting hardware (racking)? What about inverters, wiring, grounding gear etc?
Backwoods Solar is a good outfit -- I bought the rig for my van from them (two 140 watt modules, 1000w inverter, two 6v deep-cycle 250 ah batteries).
For a grid-tied home rig, a small local installer may be able to get wholesale pricing on the equipment and save you enough to have him do the (warrantied) work. That's what I found when it came time to price stuff on my own. Look for a qualified guy who works on his own and hires electrical and labor talent as needed, so you're not paying for overhead on his shop and sales staff.