I've built Youmuu's on ad carries like 50 times 'cause glorious normal games.
As for brutaliser - I don't really like building it unless I'm running an arp page (preferably full), which I never do for solo top Lee Sin. In a generic game case the damage gain just isn't that glorious without some more armor penetration aside from brutaliser's 15. It also upgrades into an item which you don't really want on late game Lee most of the time. Neither I find 10% cdr improving anything much.
It will do it's work if you're going to put pressure on other lanes though as they're likely to have less armor resulting in higher damage gain. I remember building it on jungle Lee twice for stronger ganks. Then again, I run a mix of arp and ad runes on junglers like Lee so it's a bit different.
I really like brutaliser on Wukong, J4, Garen and Renekton because of wonderful base damage, % armor reduction skills which obviously are counted before flat arp and because I always go for 25(+6) arp pages on them. But this is nothing unusual therefore not interesting at all.
As for brutaliser - I don't really like building it unless I'm running an arp page (preferably full), which I never do for solo top Lee Sin. In a generic game case the damage gain just isn't that glorious without some more armor penetration aside from brutaliser's 15. It also upgrades into an item which you don't really want on late game Lee most of the time. Neither I find 10% cdr improving anything much.
It will do it's work if you're going to put pressure on other lanes though as they're likely to have less armor resulting in higher damage gain. I remember building it on jungle Lee twice for stronger ganks. Then again, I run a mix of arp and ad runes on junglers like Lee so it's a bit different.
I really like brutaliser on Wukong, J4, Garen and Renekton because of wonderful base damage, % armor reduction skills which obviously are counted before flat arp and because I always go for 25(+6) arp pages on them. But this is nothing unusual therefore not interesting at all.