If it was me, for the next 4 or 5 months I would stick with your 2800 as long as you are using the newest "modified" firmware.
I know this is always the case, but there are quite a few reasonably priced good quality PAL progressive capable players on the horizon. One of which will be the philips 963 which replaces the 962. It looks very apealing because it will be roughly half the price of the Denon 3800. The European model of the 963(scart equiped) is supposed to also be equiped with the faroudja FLI2200 de-interlacing chip. This information is based on Philips own spec sheet.
http://www.p4c.philips.com/
Search for "DVD963SA/001" under documentation and downloads.
Basically the 963 is: 108MHz/13bit, Faroudja DCDi, SACD, Crystal DACs, Burr Brown Op-amps, etc. General audiphile grade audio circuitry. The 963 should also be handset hackable for Multiregion and PAL progressive just like the 962.
The 963 is supposed to be available in September.
There are also a number of other promising looking players coming out from Marantz and others.
I'm looking to replace my Nintaus 9769 with one of these such players in 4 or 5 months. I'm looking forward to some price competition in this high-quality mid-range-price region of the progressive scan DVD market.
The Iscan pro is a great product, but you will loose some resolution because the picture has to go through an extra A/D and D/A conversion process. De-interlacing in the progressive DVD player is all done before the D/A conversion.
Also, the Iscan may cost as much as the amount you want to spend on the DVD player.
Cheers,