HELP: whats the difference between these two pioneers?

[dobyblue]

I don't think the 5010 is worth $1,000 more than the 5080.
However, you should be able to get Best Buy's price down to $3,299 on the PDP-5010, at which point it is definitely worth upgrading to the 1080p set.

At 50" and at 6-8ft viewing distance, there is definitely an advantage to the 1080p set if you're using it to watch a lot of Blu-ray discs.

Plus it correctly deinterlaces 1080i to 1080p for HD broadcasts.

If you're sitting 10ft away or more, perhaps go with the 5080.