Rule 13 prohibits asking what's best.
For those filters, here's a bunch of them:
http://avisynth.nl/index.php/External_filters
Different people have different favorites and the source might dictate one filter over another.
Software with a GUI? Have you actually searched and tried any of them?
MeGUI,
Staxrip,
Ripbot264,
Hybrid, etc., etc.