I got my multiregion DVD player from here
http://web6.scan.co.uk/Products/Info.asp?WPID=83200
Works well for me and very reasonably priced for a 'known' brand (Deawoo) you have to type in a code to get it to change regions but it means I can get DVDs from the US. Which means I can buy from Amazon.com. Some older titles titles are hard to find in the UK so this works well for me. I have not had a problem with PAL/NTSC using this method, the TV seems to pick up the signal fine without any adjustments, if the correct region is set on the DVD player. I suppose for a US buyer the voltage on the unit and the scart plugs might be a problem though.