What
bert31 and
EdLancer said, though I've had better luck with the Kiwi than
bert31 might've expected (better than *I* expected to tell the truth).
Kiwi shoe polish works great and I can't get that ultra-mirror spitshine look with the others I've tried. My Johnson & Murphy and Allen Edmunds dress shoes are mostly from the late 1980s and they're holding up just fine with the Kiwi (which sorta surprised me). I had wondered if the leather would suffer from not being treated with something more "nourishing", but that hasn't been the case.
Last time I had some old AE's resoled (via the AE rebuild service) I told them to do a complete refurbishing if they thought they could render any improvement; they said there was no need for anything other than the new soles, that the shoes were holding up great.
They did polish them and give me new laces...heh heh, their factory polish job wasn't up to my standards so I spent some time getting them back up to snuff with the Kiwi
