I started with TeXworks (+ XeTeX, which both happen to have been created by Jonathan Kew) and I found no reason to change since then. The only slight drawback is that autocomplete support exists but is rudimentary, however it doesn’t bother me that much.
Which editor do you prefer?
I was using TexStudio, but eventually I landed on Emacs – the keyboard shortcuts it provides are very convenient. For managing references, I use JabRef to maintain the biblatex file.