Personally, I think the tri-top does its job just fine and there's not much that can make me forget (when wearing it) that I'm getting the life squeezed out of me. Because it presses everywhere, the top tends to feel a lot tighter and it doesn't do much with the hips (or mine aren't naturally noticeable) so there's no point in it covering my stomach. I also worry about my shirt rolling up because with the try-top you don't have to worry about someone accidentally seeing you but this one can be seen if the shirt lifts a little.
It's also difficult to tuck in and rolls up a lot in my opinion. I only wear it when I'm washing my other one.