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.
Modded Brinkmann Gourmet. Basic UDS. Rescued 22.5" OTS. SJS Mini-WSM. Stubbs. B&B Oak Lump.
Cannondale 2009 F8 (for burning off all the great BBQ)