Meteor Storm couldn't hope to compare with ME in any undead/demon situation.First off, the meteors create their own little areas of effect within the large cast space. Also, each meteor only hits, what, four times? I'm not too good with meteor storm as I've never used it much but each one of those meteors hits in a random spot in the cast area so you'd have to have your mob spread out pretty well to take every meteor's worth of damage...but then they probably wouldn't die by the spell...well, maybe a few of 'em would do the trick.
Point: ME>MS
E is earlier on in the alphabet so you should have known that from the start, sillies.
You've been in the guild before almost anyone else :o
And to rhino: Amplify magic is only fifty percent. It still wouldn't even hope to compare to the multiple crippling waves of attacks dealt during a single ME. The only thing you've got over ME is cast time.