I've not tried that one, but I can tell you I'm a big fan of the double front compression shirt (AKA The Ultimate Chest Binder) I find it quite comfortable, as long as I tuck it into my underwear to keep it from rolling up. It doesn't make me quite as flat as the Tri-top, but given my size, I think it has a more natural look. More like I have nice pecs.

Also, you might try a slightly larger size. I found that, though I could squeeze into a Medium, the Large was
much more comfortable, and the difference in compression was minimal.
As a side note - I've been checking out guys' chests (payback for all those years when they checked out mine

) and really, unless they're very skinny, they don't have completely flat chests. Even some of the skinny boys have definite cleavage, albeit placed differently than female-bodied persons. Just something to think about.