Yeah! I have that app too, it's super convenient. But for anything that I'm worried about image quality, I go straight to flickr. Here is a quick example of the quality differences:
I uploaded the same image to both.
Flickr
Vs Photobucket
You loose a little sharpness, but the big thing for me is how pbucket washes out the color. Also, a quick remedy for your maxed out bandwidth issue, just create another account.
Edit: Let me know if you want me to pull these images from this post, I dont want you to think I'm trashing it up.