:wa: sister,
The one I use is
www.sunnah.com, because it gives you the original Arabic text as well, rather than just a translation, and the Arabic tends to contain the the full chain of narration (though the full chain doesn't always get translated into English). It has two or three references for each hadeeth, one reference for the English translation, and a separate reference for the Arabic. For some of the ahadeeth, it tells you if it's sahih, weak, hasan etc, and has more hadeeth collections than searchtruth. Unlike search truth, you don't need to specify a collection to search in, just type your search words, and it will search all the collections it has for you. It is still a work in progress though. And it's starting to have translations in Urdu and Bahasa Indonesian. I've used it for a while now, it's by the same people that run
www.quran.com and as far as I know, is reliable. If the hadeeth you're looking for isn't in the collections the site covers (mentioned on the homepage) then it won't come up with any results.