The simple answer is that simply owning the best piece of kit will not make you a better photographer. An analogy is owning a professional tennis racket, golf club or bicycle will not make you a better sports person. Photographers seem to be fixated on the latest technology or one camera maker being better than another. Part of the problem lies at the door of the press who do comparisons and reviews, but the main problem is the human mind. Surely if I have the best equipment I will be better. Well actually NO.
Professional photographers make their living from taking photos to order, regardless of location, lighting conditions, weather or other variables. They have to make a living by consistently producing good quality work that is held up to scrutiny by the client and other professionals. The reason they buy high end equipment is more a matter of robustness and reliability and producing images that can be reproduced at very large sizes.
If you are an amateur or an enthusiast, you can pick when and where you want to take photos and if conditions aren't suitable return some other time. You don't need to invest in high quality equipment to achieve consistent quality results.
The best way to improve your photography is to get to know your equipment inside out. If you don't know how to use your current camera, what makes you think you will do any better with a more expensive and probably more complex one?Take photos daily and analyze them honestly to find out your mistakes and what you need to do to fix them. Put your photos up for review on various websites for peer review. Look at the work of good photographers and try to figure out what makes each of their photos so good. Read plenty of books on photography, especially ones on your favourite subject. Once you have improved your knowledge, improve your technique.
Finally, improve your composition by learning about graphics and colours, shape and form. See if you can improve old photos by cropping them or converting them to black and white.
Once you have done all this, you will be well on your way to improving your photography.
Finally, if you are going to invest money in good equipment, invest in good lenses, a good tripod and good editing software. It will be a better investment than buying a