I second the brisket or chuck roast as a direct replacement. You could also look for boneless shoulder country style beef ribs. They tend to be less expensive than whole chuck roasts around here for some reason.
Another option would be get a new wife, but I can see how that's out of the question for just about everyone.
Rescued 22.5" OTS. SJS Mini-WSM. HEB briqs (rebranded Royal Oak). Pecan/Hickory/Cherry/Apple/Peach woods.
2016 Fuji Absolute 2.0 LE (for burning off all the great BBQ)