LeBlanc has so much burst and she is great for roaming so i think she is really strong, also Annie and Oriana but for 6300 is probably Zed.
I started spamming LB lately and its working out good if you know what to do (which i don't :0 ) Only thing that annoys me on mid atm is Fizz, thankfully he's played less than before.
Zed is hard to play,but its really fun to,Yasuo is Soo good and strong,but i prefer Azir and Syndra too
There are very good mid owners for smaller price, like Veigar, but if I have to chose, it would be Yasuo, but only if guy knows how to play with him.
I don't know is this only in low elo but players prefer Ad mid,i follow LCS and professional players always plays Ap.I'm only silver 3 now so i want to know is there are reason for using Ap in LCS,and which one is better Ad or Ap?
Well I'm not some LoL player but I can tell you this,AP is for players who like CC such as stunn and other things,for example:AP Champion Veigar can one-shot any AD champ like Yasuo and others,but if he don't get stunned,then that AP champion is in trouble,Yasuo only needs ulti and few basics and Veigar is dead.So I think that I don't have answer on your question,but I have my opinion about this and that is some players preffer AP champs more and some preffer AD Champs so that's it.
If you are mid player you need to be flexible, its all depend on your team, its so bad to have only ADC as AD on team or full AD team. Full ap or full ad team is so easy to counter, so basically if u have ap on jungle and top or corki on bott, take AD, or if u have full ad team take AP for sure. Am not playing midd a lot, but i like AP more because most of AP champs have better wave clear