I think that the hjt.networktechs.com one is somewhat flawed as it states that your HJT version is out of date and reports version 1.91.1 as the latest version which to me shows it hasn't been updated in a long time.
It also reported something that should be removed when it wasn't coolwebsearch that it reported, so to me you have to take what it says with a large pinch of salt and you have got to know for sure if it is bad. Something you need to have some system knowledge or you could cause some damage. The hijackthis.de doesn't flag the same entry.
There are also a lot of Purple entries (Bad if you don't know them) for applications, services, etc. that have been around for ages which it really should recognise. The same is true of Black entries, Unknown, you should investigate these. Again this to me shows a lack of development, not a site that I would recommend.
