I'd hold out for a GT just because the timing chain repair is basically as time consuming as a cam swap to eliminate the AFM/DOD. But if you can find a V6 that has already had the timing chain replaced then it would be worth the look.
2009.5 SBM GT: Lots of show with some go.
The garage queen.
2008 IOM GT: Some go, working on the show.
The daily driver.
2004 Blazer Xtreme: Lots of go.
Sold and will be missed.