DILD of course, for me a DILD lasts longer than a WILD and gives me more control than a WILD.
Yea that was the same for me at first. My DILDs seemed much more vivid than my WILDs. But now that I've practiced WILDing they are just as vivid and last longer than my DILDs.
Oh and btw, MILD is a form of DILD and DEILD a form of WILD.
Yea I know, I just thought that some people would want to be more specific.