Hi there,
Just bringing my 2 cents.
I had a classic Pandora until a few months ago. I used it mostly for playing since it was IMO not really good at email/web browsing (not enough memory). I have been digging Android chinese consoles for 1 year and a half, to the point where I found that Android apps for email, web browsing an video were better than classic Linux softs available on the Pandora. Also the quality of emulators on Android has increased to the point of being as good (and in some cases better, like N64) as on the Pandora. There are even cross-ports (Robert Broglias's emu, the .emu series, and also RetroArch that ships PCSX Rearmed). Since the hardware was getting pretty slow, I ended up selling this unit. It was a tough choice, though.
So far I am pretty happy with my Android devices, but to be honest I had to tweak them software wise to get what I wanted from them, and I mean a LOT more tweaks than I ever had to do on the Pandora. And since the chinese brands are always releasing some new model it's sometimes disappointing that you buy a unit and one week later something better is released. While some native Android games are really cool, I don't play them so much. Also a couple of emulators are not as good: Sega CD is not well supported for instance. Also all these devices always have some flaw, the biggest one being generally bad battery life (3h average). Generally they are good for the price, but the Pandora feels more mature and stable, by far. Though all that tweaking was sort of fun, and I did learn a lot about the OS, I'm also a family guy and I probably shouldn't waste much more time on tweaking stuff, but rather play and relax.
Now I can honestly tell that I regret having sold my Pandora. I'm a professional developer, and though I like Android a lot, I miss the linux-desktop-in-my-pocket that the Pandora is. Also Android apps are uptaded very often, and though it might seem a good thing, I end up spending way too much time upgrading the 4 Android devices I own (phone, tablet, and 2 consoles 5 and 7 inchers). I also miss a lot the keyboard, the great battery and most of all, the storage. I can't have my full rom/games collection on any Android console, while I can on the Pandora. And the ton of free software on it, and the Linux-purist feeling of the repo.
Now I see that Android runs on the Pandora and that some great ports like the Jedi Knight games have landed. Also I see that a bunch of apps (and especially music apps like Audacity or SunVox) are either unavailable of not free on Android.
Yep I kind of miss my Pandora. And I am very very veeeery tempted to get a 1Ghz unit... especially since they are back on stock on DragonBox.