Stable and endorsed: ResEdit.. recommend you use the Annotated Bible Platypus mentioned.
Whizbang and I love it, must have for systems and spöbs: EVO Developer's Map
Okay, when will it be finished and why does it occassionally do weird schtuff?: EVO God
Finished, still very occasionally buggy, but great for setting picts and standard gear: ShipWrite
Avoid it or scream and sob and get migraines: EVEdit
No matter what editor you use, if you want to be accurate, check everything you do in ResEdit with the Annotated Edition of the EVBible in hand.
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So I take it this means you don't have a ratchet...