For reception lighting I am currently using a couple of these Lowell ID lights Lowel | ID Light Lead Acid Kit, Four-Pin XLR Connector (12VDC)
And also have this Litepanels Micro Litepanels Award Winning LED Lighting for Video, Still Photo & Motion Picture Production (http://www.litepanels.com/lp/products/micro_series.html)

I really prefer the litepanels micro, but wish it had a little more power.

What LED options are available, I want to keep the gear as light as possible, yet have the power to go for a few hours. I do not hate the AA option with the litepanel, you can always stock up on rechargeable AA's

If I could get something with a little more power, and maybe a little bigger would be perfect, hoping someone on here has found something like that.

go to the "PHOTON MANAGEMENT" section of the board. you will find several threads regarding these lights. i think what you're looking for is the Microbeam LED 256.
-JS

The Litepanel Micro Pro is 55W the LP Micro is 25W. More than 2X the power still runs off AA batteries.
I use the LP Micro but am considering the LP MIcro Pro. I like not having a heavy battery on the lite nor having to use a battery belt.