They say in the video that Ryobi only goes up to 4ah in the batteries. Do you not have the 5ah in the states? They have been around downunder for quite a while now.
I finally got around to building a 'Ripping Saw' (long narrow table saw). Had been meaning to do it for so long. It is a simple table saw just for ripping long lengths of timber. Video: https://www.youtube.com/watch?v=x8ozZ9bpuqc
I might trade up to this soon from my old Hitachi (which I have never been entirely happy with). Interesting to see another Makita cordless tool made in the UK, like the orbital sander. All my others are made in China.
They do make cordless (with gas) ones. http://www.makita.co.nz/products/model/GN900SE
I wish they would make an 18v one like Dewalt do, if thats what you meant.