Hmmm, I get the fewest artifacts by using X-Form. EA is really tough to use on distorted guitar as it can't find transients. One fix for that is to record a DI'd guitar at the same time(make a group of the mic and DI tracks and keep the DI track muted). That way, you can enable EA on both and use the transient/warp markers on the DI track to make the edits. Many times, I will fix timing with Melodyne instead(not quite as quick, but usually sounds fine)
