So im at nearly 3K IP and going to save it till I get around 6k IP, Will wait to see how Kled? is going to be, if he ends up being bad who do you recommend to take? Yasuo or Lee Sin?
I main Mid lane and sometimes Jungle, I don't mind them being difficult to play(I love champs that need skill),
When mastered, who's better?
or 
?
Jayce, sleeper op in mid lane
Yasuo has a steep learning curve but is one of those champs that no matter the meta, if you're good enough with him, you will dominate
I think Yas takes more proactive thinking (like Ekko) and Lee requires more reactive thinking. Could be switched around actually. I don't main either champs so don't fully take my opinion into consideration.
As a general rule, new champs are really OP or broken on release. So you can get some easy freelo with them for a few weeks or months.
As for Yas and Lee, it really comes down to personal preference. They are both insanely good when mastered and can carry at any ELO. If you like to jungle though, I would say Lee.
yasuo will get get big nerfs
lee is a huge play maker and has really good early pressure, if you get a lead early and get 
with 
you will oneshot in no time
yasuo has a weak early game (can be strong if played right) but dominates late game with 
or 
and has the chance to win a team a game with his snowball and plays
i happen to main both so the choice is hard for me to tell you, just choose the one who will be better for your playstyle
with time and dedication to the champions you can make insane plays and outplays while tilting the enemy team [slayer-jinx-catface]
i would have to say to hold on to see what Kled actually has in his kit 1st. If you like what you see go for him, if not i'd go for Lee. He fits most comps better than yas
same i dont know should i buy kled or yasuo???? i have a high noon yasuo skin shard (like i can get the skin for free) or shoul di buy kled every one says trhat he is very fun to play ????[slayer-jinx-wink] [slayer-pantheon-rainbows] [slayer-pantheon-thumbs] 
btw i am pretty bad at league like i man fizz and talon and i main mid and some times jng too
I would pick yasuo. He has a monstrous late game and can 1v1 pretty much anyone once he is full build. Once you get his mechanics down he's quite difficult for most people to play against
