Hello I am new here and I was wondering if someone could tell me about a good digital camera for amateur photography. I really like black & white pictures and would like a digital camera with that kind of feature. I was looking at the Canon PowerShot S21S / PowerShot G6 / PowerShot A610 / or the PowerShot A620. I only have $200 or $300 dollers or so and would appreciate any input. If anybody can tell of a better camera i would also appreciate that information as well. Thank You.