ME 1: 4.5 stars
ME 2: 5 stars
ME 3: 4.5 stars

ME 2 was my one of the first RPGs I tried playing in my PS3. I made several mistakes that ended up with some of my crewmates dead. However, this introduced me to the important aspects of RPGs, specifically morality systems and choices that matter. Playing ME 2 made me realize that I had to start with playing ME 1 for the optimized gaming experience. My thoughts after playing the franchise were mostly positive. As previously mentioned, I loved the fact that most of the choices actually had an impact throughout the franchise. I also loved interacting with my crewmates. Most of them have interesting and distinct personalities that made the games much more fun.
I liked ME 2 the most
In my opinion, ME 3 was the most dissapointing out of the 3, though not my least favorite. Although it was the most fun gameplay-wise, I thought the game felt rushed, especially near the end.
Overall, this franchise represents the pinnacle of RPGs.