See this thread:
Panasonic DMR-EX77 Analogue or digital
Both the models on the Amazon site are EB models... for reasons given in the other thread.
The price difference is because of the colour only, black in one case and silver in the other.
The European model you are referring to has proved very difficult to get although some have succeeded... usually by buying it when there.
There are implications... One of which is that the EPG is always 1 hour wrong.... and the analogue tuner may not work at all in the UK. That would need checking.