I think it completely depends on your style of riding and where you ride. (also how heavy are you) A friend of mine, 250lb + did bend my WTB’s on a rocky single track.
I have Carbon Enve’s on my Cross Country Bike, DT Swiss 483 on my Enduro, and have had WTB’s and DTS on other bikes. The only thing that let me down was the tires, which are just as important. If you go tubeless, the rim is important on how well they seal. I use 2.35 Hans Dampf on the front, and racing 2.2 Ralphs on the rear of my 29r. Kenda and Continental make some nice tires as well.
That being said, I don’t notice any serious difference unless the rims don’t seal, other than weight. Weight is only important on my cross country bike when I am racing…..and I am not a serious racer.
Long and short, I wouldn’t waste your money unless you have issues.