Personally, I have never used the Zo but I bake a LOT of bread and use several machines. For myself, I usually bake bread in round loaves risen in brotforms and then baked in the oven. so, for me, features are completely unimportant. the point is, if you want the machine to do all the work, then a Zo is probably your best bet. I belong to several online bread groups, including some machine baking bread groups, they all like the Zo. but, I use a breadman, a West Bend and something else. I cannot remember what my daughter uses. All but one of those machines I acquired via Freecycle. it is an online group on yahoogroups that allows you to clean out your clutter and post it so that someone can use it instead of sending it to the trash. no money is allowed to change hands. my daughter has 'freecycled' quite a few pieces for her newly established kitchen (young college student) as folks in her area upgrade and have no young folks in their families. the idea is, you pay it forward when you upgrade.
anyway, when I use my machine, I put it together, set the machine to the dough cycle, then take it out, do my own hand kneading and shaping, then bake off in the oven. I find I have a LOT more control over additions, size, shape and crust style.