I had my doubts, but after buying a controller, navigator and charging unit for Move I'm impressed. I already own a wii, so knew what to expect and this basically works the exact same way.
How ever it feels a lot more accurate and responsive and it definitely has an edge over a Wii controller in the respect that it moves in all 3 directions.
Basically its the highly improved version of the nungchuck controller for the wii in HD graphics. Its that simple.
I personally already owned the P3 Eye so only needed the other bits. My only issue issues are..
1) Price. Ultimately this will be expensive because you will not just need a controller and navigator (although a normal PS3 controller can replace the navigator, but the navigator feels more natural), but also the charging unit which is highly advised as it makes life a lot easier.
2) Sony failed to mention that some games will require two Move controllers to work best, which ultimately means two the cost in that area. Now imagine needing 4 controllers for two people!!
Aside from some pricing issues, this is a good technology and I can see it being a lot of fun when friends are around or at xmas.
You have to also realise that early games for the Move will ultimatly be rubbish, and it will take time for developers to really shine. Jusst as with the Wii controllers too.
Give it time and we will have some very good games using the Move.