I put Honda light bar on mine...am VERY disappointed in extremely poor quality of Honda's fittings. Stripped right out, and now I cannot tighten the lights-they swivel around in the wind on their mounts. POS.
What ever you decide, try to go with somthing with 55 watt bulbs, I went through this about a year ago, and had went with a lightbar, and ended up changing out the bulbs to 55 watts and what a difference. FYI, you'll need to go through a relay, no biggie to install
Heres a few links to help you look at, these are where I'll be buying mine from soon: