I have always wrapped until my last brisket cook. On my last cook I decided not to wrap. It came out just as moist and not steamed. The bark was awesome and not mushy. This is now my preferred method. I will only wrap if I need a lot of briskets done for a party or something.
Movin' The Chains BBQ TEAM
Reverse FEC 100
Right Handed FEC 100
1 UDS and Chargriller Superpro w/ sfb (Retired)
KCBS & PNWBA CBJ