A bit confused on what to buy!

[TeenTog]

I just think it's an issue of technique, not camera.

For sure. While a camera may help in a few ways, I think that settling down and really focusing on using your camera to its potential would really help. I have a T3, which in many was sis similar to what you're using, and I would like to upgrade to a 70D soon. However, I need to remind myself that I can still get fantastic shots with my camera, and remember: the best camera is the one you have in your hands.