Hey all, I've been "lurking" for awhile but thought I'd finally register and respond since I just made a guide/blog post about power-leveling enchanting (and a few other things, but it applies) a few days ago.
I don't know the rules here for sharing links but it's a blog post located here:
Master Level Smithing, Enchanting, and Conjuration
I added a few things to help, specifically how you can fill up dozens of soul gems instantly using companions to help with it.
Sorry if we're not allowed to share links, if that's the case I'll edit it out.