I want to buy a DSLR camera, I have never owned one. I want to be able to take and sell photos of my travels. I have been told by many I should give photograpy a try. I currently use a RC Airplne to take low level shots of various landmarks with a Pentax S4 and S5. I want to expand my work a bit into pro kind of stuff. Put all things aside and in black and white please tell me what DSLR I should buy. I am not rich so keep it cheap. Landscapes and portrits. A little macro in there to. With that said could someone please help me.