I use a Vacula. Not cheap, but really good stuff.
Pulls instead of pushes, so fewer adaptor issues if you service many different cars.
I have an older model (15+ years), but it is still going strong.

http://www.google.com/search?q=vacula+brake+bleeder&rls=com.microsoft:en-us&oe=UTF-8&startIndex=&startPage=1&rlz=&um=1&ie=UTF-8&tbm=isch&source=og&sa=N&hl=en&tab=wi&biw=1280&bih=863