The Yale Assure locks seem to be well regarded and come in both zwave and zigbee versions. I've been very happy with my zigbee model. Replacement cylinders are available to match Schlage keys, and any local shop should be able to rekey it for you. That's what I did.
FWIW, it does seem like I've heard people who have experience with both types (zigbee and zwave) seem to be happier with the zigbee locks, although that may be due to other factors. Maybe one of those folks will weigh in.
Edit: Threads like this one are the ones i was referring to. Just seems to me like most of the folks with issues have/had zwave locks...
