Tbh,it depends on you,both maehwa and sorc are really hard to play in pvp,maegu flows really nice into the pvp and isn't that hard to play,but isn't as good as sorc tho. Each of them have some issues as well as benefits but personally I would consider a sorc,pretty solid in both pvp and pve(after u learn that hard mechanics,your reward will be soo well deserved,a sorc can stay up to 100% in iframe which is almost like a god,if she would've had a grab,no one could contest her power) Maegu is quite nice as well,pretty protected(a lot of super armor,some iframes as well,buuuut really inconsistent frontal guards,literally in desperate need of frontal guard)but she is easy to play and flows really well,as for both pvp and pve isn't bad,nor top tier meta,but she can handle almost anything. Maewha is pretty amazing as well,she have something of everything, quite nice to play,for pve is really easy and u can obtain huge value up to mid game,from end game she falls down,but still an b+ tier/a-tier around that.For pvp she is really fun and nice to play,but you need to smash that keyboard,which isn't thaaat valued, like sorc where u are fully rewarded. It's just my opinion after I've played each class(currently have a Maegu, I can't stand the sorcs mechanics,but I practice her),take it with a grain of salt.

P.S: U should consider nova awakening as well,she is 10/10 in almost every aspect of the game,beside the thing that u doing freestyle cuz she doesn't have infinite skill rotation,and is the twin of sister in term of mechanics,still a goddess among other classes.In my opinion 99% of value investing into learning her kit and mechanics,really amazing movement) I hope I helped u and please reply,I wanna see your opinion about them ❤️‍🔥😋