I think when people argue about fake breasts not having a natural look when it comes to fbbs is just a joke. Seriously, if you're talking about pro-fbbs, they're not even "naturally" supposed to be that muscular. So to argue about natural breasts when their muscles aren't natural, that's pretty much an oxymoron right there. If you don't like the look, fine, everyone has their own tastes. But to argue about "natural", especially when we're pointing at huge, unnaturally muscular women... you don't really have an argument.
As for my personal tastes, I prefer implants. I prefer good boob jobs over bad boob jobs, but I overall prefer implants. My outlook on this, is I like muscular girls. And I also like women's physical features such as curves and breasts. If muscles somehow detract from these curves, then something should be done. Hence, implants. That's my outlook, if you disagree then fine. But I like bigger women and I like boobs, and only way to really have both is by implants.