I used to workout at this gym in New York called Synergy and they had one of those that could only accomodate 35lb plates. If you used 45lb, they'd smash you in face. It was weird because it's a real bodybuilding gym. Pros train there.
I just prefer bent over barbell rows to tbar rows, machine or otherwise. It's funny that OP says he prefers using the barbell setup because whenever I see that I'm always like "Why does this jackass have to call attention to himself and hog one of the precious bars? Just use the goddamn tbar machine!" I get that different setups just feel better, though.