BEWARE: I've mentioned it on a couple of other threads too at this point, but Amazon has a stop-ship on the makita kit with the guide rail and the rail by itself because of the damaged-in-shipping fiasco that I had with them two weeks ago. Their page shows "item under review" for both products currently. The issue is that they shipped the saw in it's plastic carrying box with no other packaging around it! I had the first kit arrive two Thursdays ago covered with shipping stickers and tape and it was pretty well scratched up. The guide rail, which ships in it's own box, had dings on the end of the aluminum from having been kicked around. After an angry phone call to Amazon, they rush-shipped a replacement kit to me for delivery on that Saturday. I stressed the importance of them packaging the saw/box in another shipping box to prevent damage, but alas, I was talking to someone in India.
Saturday came and the delivery was made by Fedex this time instead of UPS. That kit was way more beat up than the first one and the plastic Makita case was actually cracked in several places. I nearly blew my top. They shipped it exactly the same way as the first time. After another call to Amazon, and deciding I wasn't going to wait and risk it all over again, I ended up keeping the undamaged rail from Saturday's shipment and keeping the saw/box from Thursday's shipment as it was in better shape than the second. Amazon gave me a healthy credit back for my purchase because of the trouble and after spending 40 minutes with some WD-40 removing sticker and tape gunk from the Makita box, it looks almost new. I returned the other two pieces.
I've only used the saw for a couple of short cuts so far, but it is Awesome!
By the way, Home Depot has the Makita kit with the guide rail on sale ending today for $319.99, the lowest price I've ever seen on it. I don't know if HD will ship it properly though, so YMMV.