Being my first post I just want to say "Hello!" and secondly thank you all so much for your invaluable information. I have trolled and trolled here but never been active. I have a Sigma SA-7 SLR 35mm which is my only camera. When I bought it I also received a Sigma 70-300MM F4-5.6 APO and Sigma 28-80mm f3.5-5.6 Aspherical Mini Zoom Macro. I absolutely love my camera but I'll be honest with you, I do not know much about photography I'm no Pro, I just really enjoy taking pictures. Now, secondly I also am starting to get some (and by some I mean very few but still exciting) paying job requests and also I have sold 7 pictures. Here is what I'm typically taking pictures of: 1. Bands 2. Candid/Portraits 3. Night scenery (my personal fave) 4. Minimal wedding I want to now upgrade. Why? I'm a gear nut first of all and like having options (go with me on this one! ) Secondly Digital interests me. But I also want to continue to add to my collection of Lenses regardless of what I buy (Ex. if I buy a Digital camera I would like the option of diff. lenses) So...can anyone offer any help? Thank you in advance!