I have dove a CLX450 for years, both as a public safety diver and a dive shop owner. I don't treat my gear gingerly and it has seen very hard use. Apart from the normal maintenance such as zipper changes (after 10 years) and seal replacements I have never had any holes in it until recently when I put a couple of holes in it. This dive I was in a pond looking for a gun in really bad vis and wound up cutting it, and me up a little. But this pond was full of junk, I even found a pitchfork while diving in zero vis. For normal diving, or even really hard diving it has never really had any issues at all. I have done many dives around wrecked cars, ships, and broken glass, and never had an issue at all. In the last year or so I have gone through several wet suits, but my DUI suit keeps going. I am keeping the CLX (for now), but the TLS is going to be my primary daily wear suit, and hopefully with the 30/30 I will replace my wetsuits.
Anyway, I just ordered two new suits for myself and I went with the lighter weight TLS350 and a 30/30. I am not a bit worried about the durability of them, I was looking for the most comfortable suit I could get, and this is the one I chose. I am confident they will hold up very well. I am sure you will have great luck with the TLS350 or the FLX. I don't worry about durability of these suits at all in my diving.
Brent