Some enchantments just seem lack luster no matter what you do. With level 100 enchanting and level 100 alchemy will both perk sets completely unlocked the best fortify smiting enchantment I could get make when using the best fortify enchantment potion i could make was still only 29% improved smiting. It just happens to stack well. 4 items at 29% plus one potion with plus 130% improved smiting gave me + 246% on top of my level 100 smiting. No one enchantment pushed this too far, its the combination of them all that takes you to ludicrous speed. (And yes my armor is plaid)The funny thing is, there's no real reason to use mage robes or light armor if you level up Enchanting and Smithing all the way. You can just enchant a bunch of heavy armor to have magicka regen or spell cost reduction and get the same benefits as anything else. Kind of broken really, but nice to know if I want to change to magic later on I can.
One thing though...Which Enchanting perks are worthwhile? I'm at level 28 or so and still trying to level up Smithing all the way as well as Heavy Armor. Is it worth it to dump into the first perk (+20% bonus to new enchants per rank)?
I think I'm at like level 40 or so Enchanting but my enchants are still pretty shit, even with Grand souls.