advice on my next purchase

so i main mid and top, i really enjoy both of there playstyles and have carried several games with them even after all the nerfs. my next purchase i want to buy a ap mid lanner, i have played before it was, cool i went ad and had 17 kills 1st game i didnt get a chance to try him ap but i know he is strong and annoying, but now im thinking of buying he seems more adaptaple with my play style and fun . bonus what should my next adc be or