I liked the quality of the cedar creek as you can see in my sig. But at first was leaning to the Columbus 365rl. After much reading about both, some problems with the columbuses schwintek slide system was the deal breaker. I never had a problem with a hydrolic slide. Our camping cousins have a new silver back and love it. Search schwintek problems on this foroum and start reading. It could save you headaches down the road. Can't comment on the sierra/ sandpiper sorry.
Hope it helps.
Rich
Haven't needed cedar creek service so I can't comment ,but have read on this forum they were top notch.
