I've had the Flip Ultra HD for 48hours now and couldn't be happier.
Open the box, install the batteries and you can start shooting straight away. The controls are intuitive and the instruction manual is welcome in it's brevity and ease of reference.
Connect the Ultra to your PC and the software will install straight away. I was a little concerned that the minimum system requirements (Intel 3Ghz processor) would cause an issue but my Intel 2Ghz copes admirably and the videos playback without stutter-or-stalling.
I bought the Ultra so i could have a HD recording device to hand to capture those unique moments when my eternally amusing children perform their acts of circus. We bought a camcorder a few years back for over £800 but because of it's bulky dimensions, it's literally never been used. The Ultra is the same size as a chunky nokia phone of the 2006 era and is easy to fit in your pocket and transport around - easy to get-to-hand and start shooting and capture those memorable moments: exactly why i bought it.
All in all, very happy. Only disappointment was that the Amazon product description told me that an HDMI cable would be included in the box, and it's not. Turns out that any generic HDMI cable will work, AS LONG as it has a mini-connector (type c; which fits the Ultra) and standard HDMI connector (Type A - which plugs into your HD TV). I'm off to PC World to buy one of these later. If there's any issue in playing back on the TV, I'll let you know.