Would you recommend I try WS even though Gunzilla has worked perfectly well for me in the past?
Well, although I like learning about new stuff, I'm also a fan of "if it ain't broke, don't fix it".
So if you are happy with Gunzilla then you'll probably be fine just sticking with it. I am, however, of the opinion that Weaponshield is superior enough as a lubricant that I do use it alongside Gunzilla.
In short my cleaning tools consist of
Foaming bore cleaner (for copper fouling if needed).
Gunzilla for general cleanup and powder fouling.
Weaponshield for lube and corrosion protection.
A handy tip.
Buy a bunch of empty Needle Oilers from Brownells
, label them, and use them to dispense Gunzilla and Weaponshield. You'll get lube precisely where you want it and cut waste spills to nothing.