None (probably) most will work on the same principle I would guess, its a few ££ cheaper, but looks uglier lol I did notice it on eblag a few days back, if I thought it was different I would have posted up about it, the "original" one was I know gleaned from this great site, and put together by someone who got off there ass and actually did it (and good luck to him too) he was the only one at the time doing a very good bodge job of it at the time, and he improved upon it as well, so more power to him, I would go with the "original" one, as at least we know he looked in to it and improved it and knows what he is doing, there are a few people selling them now, but I suspect they copied his, but who knows???
