As a user of iOS, WP and Android devices (iphones, android phones, tablets etc.) I have no problem saying iOS has has it's own set of issues this past go around. Especially in the crashing department. No matter what platform you run there will be bugs. They may not affect you or me but they are out there and it doesn't take more than 2 minutes on this forum to find multiple examples. I haven't had reliability issues with Android itself in well over a year. Does that mean no problems exist? Of course not. I just haven't experienced them. Same goes for iOS, or WP, or whatever platform you chose.
And congratulations on sticking with a phone for a whole year.