I have the manual for the International EH55 with the 160Gb HDD (the US version had a 200Gb HDD). I have no idea about the specifics since I haven't really looked at it. I can confirm that the tuner is not North American analog, let alone high definition. I suspect the black level is off, and it definitely has the SCART connectors. A quick scan through the manual shows that there is a black level control on the US model, but it does not show up in the manual for the international model.
Given its llimitations, I would probably purchase an EH59 for $350 than an international EH55 for $350. I don't THINK the EH55 has any advantage over the EH59, and it uses the day-month-year (european) format. I can't CONFIRM it, but I'm fairly certain that it only uses the 24 hour clock, not the 12 hour AM/PM clock.