In preparation for ME3 I started a new ME1 character and leveled him to level 60 in a perfect run through with all paragon choices on insanity, then imported him to ME2 and did another perfect run through on insanity including all paragon decisions aswell as the entire crew surviving the suicide mission.
I always loved ME1, I loved the level cap aswell as the weapon and armor customization. Always preferred ME1 over ME2, however after running through ME2 again and listening to all the dialogue I think ME2 is now my favourite. The fast paced combat and amazing dialogue just makes an amazing game. ME3 is going to perfection because it combines the strengths of both ME1 and ME2 without the weaknesses of either. With even faster combat, lvl 60 level cap and weapon/armor customization as well as even better dialogue ME3 is going to win GOTY or be a serious contender and probably one of my favourite games of all time.