I was a staunch user of the sturdy 5110 after which I moved to the 3330 basically for its size and weight...but landed up with much more than I bargained for. The option to insert smiley, numbers and picture messages in sms is very much convenient.. the reminders too help a lot..for people like me who try to remember too much...and forget too many.. the only -ve point about the mobile would be the lousy tunes which are in built with it, though the vibrator mode comes to your rescue during meetings and situations where u cannot leave the ringer ON. Would have loved to get much more lively tunes..of course..the tunes speak a lot about your personality, not to say the personal profile settings that you can make on your mobile, choosing your own settings and screen savers - helps a lot.. I definitely would recommend the 3330 to anyone though the 89 series might give u much more than this series