I'm from Canada but currently in the UK and I've been looking for a Chain mortiser. I currently have my eye on the Ryobi CM31 - 110v version. I've used it once before and it seemed like a very acurate and fast tool that is better than the makita and costs less than the mafell. Has anyone used it and would I have to do more than change the plug? Is there another mortiser I should be looking at?