You can not compare the OR and Sunnybrook....totally different class. For the extra money you are getting a better built, finished and equipted TT. That being said after seeing the OR being built and the fact that they are using the BAL cable slides I would never buy one. This cable system has been around since the early 90,s...was a headache then and not much better today. Its used because its cheaper and lighter but not for better reliability. As for the roofing...the material is in the TPO family...lasts longer...much less black streaks...can easily be cleaned where you should never clean a rubber (EPDM) roof as it shortens the life of the membrane (ever see an office building roof getting scrubbed and treated???) JMHO