Hm, I could write a whole book on this, or just point you to this link:
http://www.arniesairsoft.co.uk/forum...pic=79463&st=0
In short, if you've got a lot of money to spend and/or don't care about full metal body right off the bat, go with a TM1911. If you're on a tight budget and/or want a full metal body ASAP, go with the WE1911. It's worth noting that WE involves a higher rate of lemons, but you take the good and the bad when buying a WE.