Japanes e (female) ? I've so much faovurites, but I4d say Miku (especially Core, Solid, Sweet and vivid), galaco, Lily, MEIKO, Luka, Rin, Lapis...
Japanese (male) ? KAITO and VY2 all the wayyyy~
English (female) ? Miriam & Sweet ann, I also count Avanna and SOnika as big fave... Other female Egnloids are nice and have unique voices for msot of them too~ (especially LOLa she has a very unique tone)
English (male) ? TONIO !!!!! And Léon too *^* And recently, Dex started to get my liking
Spanish ? Bruno & Clara <3 Maika is nice too (and thus ONA is)
Chinese ? YanHe, she gives me some France Gall vibes and she stands out the msot in the Chinese 'loids cast atm *O* Luo is nice too, and I will look forward for the next ones to come out to see if Longya and Moke will have my big liking or nah