I have Ark 1, 2 & 3, as well as some spitfire stuff (symphonic orchestra, chamber strings, bhct, swarms, olafur evo), and i have an opportunity to get either ark 4, along with stretching it for the NI KK s61 mk2 (as a scond tier, bottom is nord stage 3), or Strzov Afflatus strings which i can get with a teacher & loyalty discount. Ark 4 matches and completes the Ark series, giving the "edge" and first chairs sound. Afflatus impressed me very much, has a very defined sound with lots of articulations - but restricted only for strings. Ark 4 is currently for sale for €399 while Afflatus will cost me €625 after the discounts. Opinions are most welcome! Thanks!