ADDITIONAL NOTES from the Youtube guy: Generally speaking, unless you have elite genetics and/or are on the secret sauce, being both very big AND very lean at the same time just isn't gonna happen. If you're going the natural route (what I recommend for the vast majority of people), there's going to be a trade off involved if you want to go further to either side of the muscularity-leanness spectrum. You can get a bit fluffier and look impressively big/muscular while in clothes, but not quite as great with your shirt off... Or you can have that really lean/aesthetic look when shirtless, but be flirting with do you even lift status while in clothes. It’s just the reality of natural bodybuilding and a matter of finding where on the spectrum you personally prefer to be at any given time.
Personally, I don't think it is a difficult decision at all. Of course, there's always this guy, pissing me off: