I completely agree with every Farkas advice. But I do think Plaits stays the best choice to begin with, AND will remain in your rack as a swiss knife even if you get an E352, for example (I've got both).
Talking of drones, Telharmonic is a classic sound source too, and Clouds stays one of the best tools for creative ambient patches, bluring an arp for example...
'On ne devrait jamais quitter Montauban' (Fernand Naudin).
https://soundcloud.com/petrus-major/tracks