Summary: Mine has pairings to three desktops (via Bluetooth dongles - they're cheap!), an EeePC netvertible, and an Archos 32 Android tablet. Switching is quick (you just use Fn+1 through Fn+6 after you've set up the pairings).
Pros: Maintains 6 pairings. Runs on plain old AAAs. Keys feel like they're in the right places (except tilde). Tactile response is quite comfortable for this size of key. Recessed ON/OFF switch on the underside.
Summary: This failed to work with a BlackBerry Curve 9330 even though the pairing was successful. Turns out that the Curve doesn't support HID devices, or at least not this one. Not really the fault of the keyboard though, so I gave it a "middle of the road" score.
Pros: Solid construction, responsive keys, extremely cute. (The girls say "Awww, lookit!")
Summary: I got this keyboard for my ipad and Galaxy, the fast switching feature are really helpful for me to jump between the device, the key size after few hour using I can get it on hand and type faster then before.
Pros: Fast Switching, Easy to paired, works with PC, iPhone, iPad, PS/3, Samsung Galaxy (Android 2.2)
Cons: Keyboard size is a bit small but understandable is for the mobility design, is just like any other new keyboards, need sometime to get used to it.
Summary: I got this keyboard to use with an HTPC so I can leave it on the coffee table without taking up too much space. It works OK for the most part, with the exception of the space issues mentioned in the "Cons" section.
Pros: Compact, simple to setup, no connectivity issues so far.
Cons: No indicator lights for caps-lock or num-lock. Space bar doesn't respond if pressed off center. Occasionally the space bar generates two space when only pressed once (didn't correct those errors in the review to show frequency of occurrence).
Summary: I use this keyboard to connect to a laptop and my iPhone. The built in BlueTooth allows me to switch between the devices with the press of two keys. Setup was quick and easy. The keyboard feels solid, but a bit heavy. The keys are smooth and responsive.
Pros: Easy to connect, feels solid, long battery life, responsive keys.