Canuckgal,
I toiled over the Mak 12" and Bosch 12" for some time before going with the Mak. I have nothing but good to say about my 10" Bosch, and I really like the micro miter adjust on the 12" Bosch.
However both tools are used on the job and at the time I had 3 ham fisted knuckle dragging gorillas working for me. The feed back I got from the tool/repair shops I deal with said the Bosch 12" was too sensitive for muscling about, e.g., over tightening levers, plastic parts, (like the miter micro adjust) snap off too easy. As a shop tool too sweet. The Mak's more suited for site work, less things to break.