Hi Ana,
At the end of the day:
- the body is less important than the lenses attached to it
- the lenses are less important than the eye *behind* the body & lens.
It’s doubtful you’ll outgrow either body for a long time, so getting hung up on minor technical specs which won’t affect anything you do with the camera is wasted energy!
A good lab can make awesome prints form a 5mp camera. If you’re a ‘spray and pray’ shooter, who needs the fastest burst rate possible to shoot hundreds of images in the hope one might be ok, then the 300s edges it.
Otherwise, it’s all just minor tech changes – the more time you spend umm-ing and ahhh-ing over them, the less time your spending making images!