Been playing a zerker and zerkers rule all

Have one of everything and the zerker is my highest right now. Just mows through everything without breaking a sweat.
Also the order of important of rare enchanters to find.
Jurik the Socketer - adds more sockets onto items up to 2. Since every unique has only 1 socket when found, another socket on all your uniques is a massive improvement.
Borris the Stout - This guy does up to 3 enchantments, but only does 1 type of enchantment. Stat enhancements and MAJOR ones at that. It depends upon the item level but typically 1 avg point for the level of the item. Meaning an item that is level 40 he can put up to +40 of a given stat per enchant. With 3 enchants he can stack up to +120 on a level 40 item easy. That's how I have massively high stats right now.
Those two are basically the best enchanters in the game to look out for. There are a few others ones though to look out for which include.
Farquez the Assassin - He does massive poison enchantments. On weapons this is like Borris. He can do +1 point of poison damage per level of the item roughly and up to 3 enchantments. Which means a level 40 weapon could potentially have +120 poison damage. Again this is huge amount of damage especially if you already are using +poison % stuff, with +poison % stats (outlander), a poison weapon base, and socket in a poison gem. The damage can get insane off the gear once this guy enchants your weapons for + poison.
Mooritz of the Desert (fire), Telsor of the Storm (elec), Forgot Name of the North (ice) are the other enchanters like Farquez except for their respective elements. As a zerker, I have a huge bonus passive to ice damage. So I was really happy to find the North guy. I got 2 swords enchanted by him. One with +107 and the other with +99 ice damage.
There is one other enchanter, again the name I forgot but the moniker is "The All-Powerful" which will do the 4th enchantment to anything. He does standard level town enchantments though. But if you got all your gear enchanted by Borris for armor, and an elemental enchanting by one of the others, that 4th enchantment is icing on the cake.