johnny2
This is probably one of the best:
Expensive - but it is 36 volts
http://www.grizzly.com/products/36V-7-1-4-CIRCULAR-SAW-KIT-/H9058
This is the kit that I have and it really has worked well for me..
http://www.grizzly.com/products/18V-1-2-Drill-Met-Cutting-Saw/H5105
Here is just the saw....
http://www.westerntool.com/product.htm?pid=454853
I buy a lot of tools from both of these outfits for my cabinet shop...