Blu-ray is a higher resolution video format than DVD. If your TV can handle 1080p, 1080i, or 720p, it will be a big step up in video performance from DVD. If your TV is old or small, you might not see a big difference.
The Oppo BDP-83, or BDP-83SE, will play all that you have listed. Go to their web site to read the details.
A DVD player can't be upgraded to match the high resolution Blu-Ray performance. That's sort of like trying to upgrade a VHS player to match DVD. Can't be done.