Here is what I did.
I had a 500$ DVD player that I purchased in 1999. No Progressive scan, no upconversion, it did not even read dvd-r's.
I was looking for a better DVD, and was seriously considering the Samsung HD 941, and, while it was a good dvd player, (esp for the price and features) I decided to wait for something better, around the same price.
At the same time, I purchased a Sanyo DVD recorder, with Progressive Scan.
I found the DVD recorder to have a better picture, and also Prog Scan, so while I am waiting for that "perfect 300.00 universal DVD player" to come along, I am enjoying a better picture with my 17900 Sanyo recorder.
I would say wait, unless you are really dis-satisfied with your current dvd player.