I basically checked the tech specs of all my current equipment for what was universal and what wasn't. Then added up the wattage requirements and tripled it to get to the 3000watt converter.
As for PAL vs NTSC, i currently have a 720p Panasonic Plasma. We don't have cable now and didn't plan on getting it once we were then. right now we do OTA so i was thinking of getting a USB OTA PAL receiver.
Either way, the plan was to sell my TV and get a new 50" Panasonic Plasma since the costs is so much less here than the UK.
You have to consider the hazard of shipping a plasma TV.
It is generally better to buy the TV in the UK. Then you can use over air signal. There is usually a good over air signal in the UK, especially in the London area.
Whereabouts are you going to be living in London?
I basically advise against shipping a plasma TV to the UK from the US. It is usually more hassle than its worth.
The other issue will be space. Do you have a place to live yet? Living spaces are much smaller in Europe than the US.
My eldest son had a posting to the UK just over a year ago. He is in the lovely Surrey town of Godalming, working in Liphook Hampshire.
They have rented a classic late Victorian, two up/two down.
This is where he works at Bow Hunt Manor. Headquarters of IML
The grounds.
You should have a very good time. The cost of living is much higher than here in the US, which my son never stop telling me. They are however having a wonderful time in the UK.