I've owned one of these for two years now. Its a revelation! Nearly every person that uses it on site is impressed with its capacity and accuracy. Its capacity is awesome in both bevel and compound mite cuts. I cut all skirting upright against the backfence meaning any kickout is hidden, and the mitre is dictated by the whole board and not just the top or bottom edge. My mitres where instantly tighter using the saw, making stair cuts on skirting, multiple off angle mitres, scribes and crosscuts go like hyperspeed! With the laser setup it makes it even faster to use!
The only down side is the blade supplied with it. Its a bit rough and only suitable for framing or roughing out work. I upgraded to a Freud Diablo! The muts nuts!!
I started out with a DeWalt 777 which was really limited and disappointing. Quite a few of my reverse mitres where literally burnt through! The motor and the blade just couldn't cope with the angles! A few guys I work with have the DW712. Its a good saw but a little bulky compared to the 718 surprisingly. It also suffers from bearing problems. Makes a really annoying whistling sound after a while!
The Bosch saw I've not used but have had a close look at. Can't quite understand why Bosch insists on using so many plastic components. Loads to break off when you're moving them about.
The Makitas are nice saws, but for a similar or slightly higher price compared to capacity and performance, the DeWalts have a better build quality and robustness, and the ease accuracy most other lack!
Im a firm believer in the following Philosophy.
Festool and Hilti are a league of their own, however for the mortal tradesman
DeWalt make the best chop saws
Makita the best drills and table saws
Bosch the best sanders and hammer drills
The rest can argue amongst themselves!
I also go on a bit as you can tell. But I'm very passionate and love my kit and the job I do!!