i still say the question shouldn't be what is amazing about oled, but what is wrong with what you have?
i think oled is the logical next step, but there's not a rush to take it until something is legitimately bugging you with your own display.
Displays: Samsung PN64F8500/JVC X35
AVR: Pioneer VSX-1130K, 7.1/5.1.2 audio
Sources: HTPC, PS3, XBOX360, Wii
Control: Harmony One