Looking at the prices for Home Depot Ryobi cordless combo kits with LiON vs. NiCAD batteries I see quite a price difference. If I already have LiON batteries (from other Ryobi outdoor tools, blower and string trimmer) it looks like I could save some money by buying the NiCAD tool kit and using the LiON batteries and charger I already own for the light use they would see around the house. Does anyone know if the quality of the tool is any different in the two types of kits or is the cost differential simply due to the battery and the only difference in the tools is the color scheme?