So I have been researching what the best stone is for pool coping and it appears that most are going with Travertine. However, I have read about a lot of people having problems with it flaking and pitting only a few years in which has me concerned. Apparently it is particularly a problem in Texas, and I am in Oklahoma which is much closer to Texas than I would like 
My only local options seem to be:
Travertine (from Mexico): Current Leader
Slate: Love the look but have read it is even worse than Travertine
Brick: Durable but I'm personally not a fan
Concrete: Durable but again, just not a fan as we really love the stone look.
Pavers: Maybe my "safest" option
I have read that Quartzite is denser and will last much longer but I would have to order this online. However, when I Google "Quartzite pool coping" it doesn’t pull much back which surprised me.
Just confused and looking for some thoughts or guidance. Will I be alright with Travertine if I seal it every year?

My only local options seem to be:
Travertine (from Mexico): Current Leader
Slate: Love the look but have read it is even worse than Travertine
Brick: Durable but I'm personally not a fan
Concrete: Durable but again, just not a fan as we really love the stone look.
Pavers: Maybe my "safest" option
I have read that Quartzite is denser and will last much longer but I would have to order this online. However, when I Google "Quartzite pool coping" it doesn’t pull much back which surprised me.
Just confused and looking for some thoughts or guidance. Will I be alright with Travertine if I seal it every year?