Congratulations on your decision and purchase, and welcome to the board! Only your ears will be able to measure the value-for-money of the differences between your Pioneer and the 808.
I would recommend a two step process. Look for a second hand 596/508/G08/G98 player. This is a not-too-expensive route where you can test if there's a worthwhile improvement for you.
If so, then have your dealer loan you an 808 for testing.
Also if you can try and test a network solution like Squeezebox, Sonos etc. This is clearly the future of digital media and you may feel it's a better investment.
Regards
Mark