I'll chime in too.
Personally I would start with a SM. I started with a Brinkman offset and I still use it, but the WSM is far easier to use.
The only reason I say WSM over a UDS is if you decide you don't care to do Q (requires too much time, etc...) you will have no trouble getting rid of the WSM. If you get to that point, you just ship it to me.
My Boys: Joseph (EI); Andrew (EE); Daniel (EE)
My Toys: 10 WSMs (B, C, DH, DA, EZ, DZ, EO, DU, DR, EE/DU mutt); Brinkman Cimmaron; Chuckwagon Cooker; 4 22.5" Bar-B-Q-Kettles; 2 18.5" Bar-B-Q-Kettle; 1 Red OTS (H); 3 WGAs (EZ, DE, N); 3 SJPs (DT, DR, DR); 2 Smokey Joes (A, K); Genesis Silver C (DU).
"For when democracy becomes tyranny, those of us with rifles still get to vote"