So my transformer does not come with 3G. I can use wifi but most of the time I use the built in tethering function on the desire HD for some internet love. Can't do that with the HTC Mozart. Thanks to my sister who swapped the phone she had with mine.
The transformer is made for typing. Well, the keyboard dock at least. No longer do you need to fiddle around with the on screen keyboard, you have a full fledged chiclet style keyboard to type till you get callouses on your fingers... not that you would get callouses typing on the transformer keyboard dock though. The keyboard also have some specific keys to access functions on your tablet. You can adjust brightness settings, turn wifi or bluetooth on, take screenshots and play media. I'm digressing. on the software side, the transformer comes with polaris office. this full featured office suite enables you to view and edit office documents, spreadsheets and presentation. This app is preventing me from splashing out yet again on quickoffice or documents to go. It is fairly decent. I have the option to sync with google docs or box.net. Hence, you can save your documents in the clouds. Apart from that you can download various other wordprocessing or note taking apps so that you can type to your heart's content. Evernote is a must. It has a tablet enhanced beta that you should try.
The built in browser is flash 10.3 compliant. That in itself is a win. No longer will you have the excuse of your browser not showing flash based pages. Videos played inline in the browser itself and the browser also scores well in some of the browser tests that I tried. There are also other browsers that you can try such as Opera Mobile, Dolphin HD, etc.
There are a number of twitter clients which are compatible with honeycomb. My personal favourite at the moment is plume. Tweetcomb is also good where as the default twitter client for android is nothing like the twitter client for the iPad. It's not fully optimised to take advantage of the big screen. I keep going back to the iPad to compare. Facebook optimisation is also lacking. But I'm sure that as more and more developers start tweaking their apps for honeycomb you will see more support for the tablet.
I'm stumped for now.