I have custom sliding glass doors that lead to my back yard. They are old and require regular maintenance to the tracks. Mostly because the dogs will get dirt into the runners. Once that happens, they'll come off track. It's really a shock to you when suddenly you are holding the glass door to keep it from falling!!! If you clean it when it begins to drag, you are fine.
We've replaced the rollers a couple of times, but it's easy and hubby does it. Again, because of the dirt build up in the tracks.
I have a set of double glass doors with the blinds in them in another area of the house. I love them. Totally love them. Haven't had any problems. If my slider wasn't custom, I would have had it replaced by the doors a long time ago. We priced it out once and decided it just wasn't cost effective.
Hondo Von Dopplet L Bauernhof "Hondo"- GSD
Lilie's Tug McGraw "Tug" - Golden Retriever
Maggie - Mini Dachshund (Rescue)
Lonestar Pivo - Texas Blue Lacy
Ashe - Barn Cat
Katie / APHA