Wilbar is another maker and they have several brands at different prices and styles. Sharkline and Aqualeader are two of their brands. I have had an Aqualeader (AL) for 7+ years, all above ground (meaning not buried any) and I have not had any problems. My pool has resin bottom rails, top rails and risers and caps. I did have a small amount of rust near the skimmer. I removed it and painted it when I changed my liner. A liner would normally last 15+ years but mine was chemically damaged by a puck on the floor. I no longer use pucks so this is not an issue anymore.
If you are getting a deep end, My understanding is most of the the exandable liners are by Doughboy (DB) even if you you have a pool by another manufacturer. That's the impression I got from my local pool store but they mainly sell DB and AL.
