- The domain was registered in 2007, which is reassuring, however the registration information is hidden, which raises some questions, especially given the fact that you are supposed to trust this site with personal data (like address, phone number, date of birth, name)
- The design is ok, although there are some technical glitches (like using the sitemap link to give the sitemap for the search engines, although this wouldn't be necessarry - there are other ways to point the search engines to it)
In conclusion I have a low confidence level that such comparison sites would be a reliable information source and also the comparison on price alone isn't enough when making such an important decision.
Full disclosure: this is a paid review from ReviewMe. Under the terms of the understanding I was not obligated to skew my viewpoint in any way (ie. only post positive facts).