Since you're looking into the 6yr I'll assume you're a high school grad with limited college experience. All the questions you have asked have been answered a billion times over on this forum. There is a two-page thread right below yours (as of now) that unless i'm mistaken answers most of your questions all by itself. Starting threads on multiple school websites asking rudimentary questions will not provide you with the best answers, and frankly makes you look kinda lazy (accentuated by the bad grammar ^_~). Having said that;
The school's okay. Lots of self learning... really depends what you want out of it.
Defects inc the fact that some of the profs suck at english, or just don't want to teach beyond reading off slides. They are apparently also interpreting all the hours required for each subject (as stated by the EU or US boards) as the max as well as min, so some of our classes go really fast. Exams are written unless you need retakes, with most even being MC.
In the 6yr, not sure as to difficulty, though I hear the first couple years are a breeze, followed by a plunge into the 'real' med classes. This is med school though, so you shouldn't be looking for the easier choices. The easier a school, the more self-study you'll need to pass the USMLE.