Definitely my commuter/city build Litespeed rigid MTB frame with dirt drops. It has a pretty plebeian Deore DX group, a 7sp freewheel and takes easily sourced 26inch tires. I'd add a front rack and bring a set of barcons with me. It's reasonably light, versatile and TOUGH. It's also set up for trailers so that I can take the dog...you definitely want a dog during zombie time.