I am sure DR3 will be good, but I don't see how people can say Ryse will be repetitive and boring yet not say the same about DR3. Endlessly mowing down zombies seems a bit boring, at least to me.
Open World (DR3) > Linear (Ryse)
I think both titles offer limited replay value but I personally am I leaning towards DR3 based solely on the open world concept. The option to stray from the objective and raise hell adds a little extra spice to DR3 for me. If I get either early on I'll
most likely sell them within a week before they lose value. I don't see either one keeping my attention for very long.