So I have all dead bolts so slightly different but as for quality I can confirm your thoughts. I have a Yale and two Schalge, both have great build quality, with minimal plastic. The units are heavy, more metal, less plastic. The Yale has a more updated and modern look and feel to it. Motor is pretty quiet. The Schalge is has a slightly more dated look to it but overall very nice lock as well. Motor is a little more noisy but possibly more powerful if the not aligned perfectly. We also went with all Schalge hardware for new knobs and handles for our doors (updating from brass to oiled bronze).
I do not have any Kwikset locks but I would agree they are probably slightly lower down than the Yale and Schlage. I would consider them more of a entry level product, good prices, decent quality, but not top notch (I worked at Home Depot a while back). Also I have looked at their locks before and just did not really like the looks of any of them. All the designs seems to be outdated.
Alfred DB1 (since I have one), is modern and sleek, updated features. The one drawback is the interior part is nearly all plastic, it feels very cheap. The battery door is barley holding on (no screw), I am surprised we have not knocked it off yet.