Are you talking about the GSC 42' pulpwood cars? If so, I have a couple.
1) the pulpwood load is improved from last time's run (this year, GM&O, last year ICG), but load is still kinda toylike
2) small grab irons need to be added (a little time consuming, but not bad...better than Walthers since they are already painted), so some glue and needle-nose pliers are good
3) the car is about a 1/2 oz too light. I put a 1/2 weight on the load to bring it up to NMRA
4) the Chooch load is nice, and gives the car plenty of weight, and looks better, but costs $10 per load.
It's a nice car overall, and is prototypical for two of my railroads (GM&O and ICG) compared to the Athearn pulpwood car they have.