It can be hard to decide which camera is best, the TMT 500D or 550D. It really comes down to what you’re looking for in a camera and the budget you’re working with. The 500D is an entry-level camera, so it's relatively inexpensive and easy to use. The image quality isn't bad either, but you won't be able to shoot high-quality video or capture very high-resolution photos. On the other hand, the 550D has a more advanced sensor and an advanced autofocus system, which is great for capturing better photos and videos. The downside is that it's a bit more expensive than the 500D. Ultimately, it depends on what you're looking for in a camera. The 500D is an excellent option if you want a basic camera without breaking the bank, whereas the 550D is perfect for capturing professional-quality photos and videos.