There is nothing special about WEN, it's just a silicone based conditioner. With your shorter hair you may find that silicone is too heavy now.
(My hair is past my rear)
I like these products:
http://www.amazon.com/Shea-Moisture-...G9YFFMGHFM2968
http://www.amazon.com/Shea-Moisture-...isture+shampoo
http://www.amazon.com/Shea-Moisture-...09YDFQAG92VS6K
Alternatively I would suggest you clarify your hair first, to remove all traces of silicone, then buy a .90 cent bottle of VO5 conditioner and try that. Many people have reported the same good results as they've gotten with more expensive conditioners. I'm told the kiwi clarifying conditioner is good although I prefer the strawberry champagne kiss as it has protein in it and my hair likes a little protein from time to time. I've also heard good things about this one:
http://www.amazon.com/Therapy-Blackb...VT9TK5JBGYKM1M
ETA: One more thing to remember. If you are used to silicone based conditioners, you will find that non-silicone conditioners will seem runny. This is ok, good even. Silicone DOES have it's place in hair care, but it can also be very dangerous to your hair. (Reason being that silicone can coat and seal the hair shafts so well that no moisture gets in to the hair where it needs to be, and so the hairs get brittle and dry. Silicone is good at masking this issue because it puts a shiny, plastic-y coating over the hair that gives it a false appearance of health. Then, when you clarify your hair and no longer use silicones you'll find dry, frizzy, straw hair. If you are going to use silicones it is best to use only water soluble silicones.