If you want to be a professional photographer in the future, do you want to go to C or N now? What kind of entry machine should I buy? ?

Choose home C, and you are upstairs. Softer color, sharp noise reduction at high sensitivity. The entry-level models are 500D and 550D. Personally, I feel that the C-home machine feels better. If it is 40D and 50D, it belongs to the mid-range model, but it has been discontinued for 40d ~ and should not be sold in the market. My 50d feels very comfortable. Since you want to shoot professional photography, you should spend more money to buy 50D, and the single camera is about 6000.