They probably hold up quite well in a nice dry arid environment like the desert SW, but if you live where they use chemicals or salt on the road, that topper is going to look like crap rather quickly... If all the older service body trucks in your area still look good, then you have no worries. If they're rusted around all the doors and latches, then you probably should think twice about getting a steel topper... Strength wise, I bet they're comparable to fiberglass. Of course Aluminum comes apart the fastest if you put a bunch of weight on the roof. Not sure why everyone thinks fiberglass toppers are so flimsy... Perhaps some are, or were, but my experience with any newer ones is that they're plenty heavy and strong!!! I think they used to crack on older trucks, where the frame flexed a lot, but newer trucks are so stiff that it really isn't a concern anymore... and older trucks could take apart an aluminum topper FAST! (I know, I welded my aluminum topper up several times on my old 78 Chevy, and I never put weight on the roof!)
Now that I think about it, I bet this one I saw at OE14 was from Caravancampers...
Nice looking topper!! Sorry this is the only picture I got of it. Was digging the doors and bumper at the time...
![IMG_3396.JPG IMG_3396.JPG](https://expeditionportal.com/forum/data/attachments/170/170215-5614261eea089e8a82943fa7183a49f2.jpg)