PowerShot A3300 IS and A3200 IS
With a 16MP sensor and 3inch display the A3300 IS is the bigger brother here sharing the same 28-140mm lens as the smaller A3200IS which boast 14MP and 2.7inch screen. Both record 720p HD video
PowerShot A2200 and A1200
The two bottom models, the A2200 goes slim by using a lithium rechargeable battery while the A1200 sticks to AA batteries that you need to take care of yourself. Both cameras have a 4x optical zoom, 14MP CCD and shoot 720p HD video.