My experiences so far:

Pro
-5 screens
-better email with FroyoEmail, but Maildroid is also good
-Flash in browser works (not always though)
-Reader landscape (allthough for me to the wrong side. I often want to use the eDGe like a laptop: ereader up and tablet on table.)
-switch fonts on ereader
-New app: Dev tools: nice feature, but do not understand them all yet. But I'll give it time.
-New app: Spare parts: nice feature, specially the battery history and battery information
-New app: Search. Very cool, specially for searching library
-Start up is faster
-Wake up is fast

Con
-Apps not to SD
-Internal storage 3GB lost when library is moved to SD
-Native Browser often closes (Dolphin also)
-Calender still has no text visible when in month-mode (like Jorte has)
-Widget Power Control, which was very nice and handy in Dingo, now is big, black and ugly.
-Battery still looses lots of energy in hybernation-mode
-Tabulationkey on keyboard appeared one time. I don't remember when, but not in Excel where it would be usefull.
-eDGe sometimes is frozen (Froyozen?)

Still happy with the EE and so far with Ermine