Hi all, I have a Nokia E71 (Symbian S60 v3) and am considering moving to either a Nokia N97 mini (Symbian S60 v5) or to Android, probably a Motorola Milestone/Droid. What are the main differences between the two systems? My priorities are a good battery life, a good push email system via imap idle, good PIM and sync to google calendar and maybe RememberTheMilk for tasks. I don't care about facebook, myspace, etc I also like to organize my contacts into groups and I understand Android is better for this. I know these discussions can degenerate into flames or some sort of "religion wars" (e.g. Windows vs Linux) but I'm only really interested in an honest comparison between the two systems. Much to my surprise, I could find very little on the web. Thanks!