I would recommend whatever camera you do get, try to get a prime lens with it or soon after. They will be sharper, but you will lose the flexibility of a zoom. If you stay with canon the 50mm 1.8 will give you pretty good results for $100 and will be good in low light situations. Im looking to get one myself probably the 1.4, but yes upgrade that T3, I started with that one about a year ago, upgraded about 6 months back, but havent really been out shooting like I want to, but the bump in MP will do you good.