Are there any hitches to avoid, looking to buy ?

I am not at all an expert, just gonna add my opinion. I just bought my first 5er last week. I got the Demco Hijacker UMS it was about $700 on etrailer.com after my research I decided I wanted the B&W Companion, but we bought a 21k GVWR 5er and the B&W only goes up to 20k, I was a little disappointed, but I do like the Demco. It also has the safety bar behind the king pin jaws. I am experiencing some chucking but its not too bad. I need to research this end of it now.