I have a Lynskey R300 with approximately 2000 miles on it. Let me preface by saying I am 67 years old and weigh 145 lb. I strength train 3 times per week and have for the last 40 years. I think a description of the characteristics of a bike requires an understanding of the rider giving that description. A rigid bike for me could be a noodle for a stronger rider.
i find this bike rigid but compliant. The frame absorbs road irregularities and vibration making for a smooth comfortable ride. When I push hard accelerating on the flat or climbing a hill (I enjoy charging up a hill after reading Selene Yeager’s book Climb!) the bike is immediately responsive. My energy goes towards moving the bike and I notice no flex.