It's almost impossible to pick just one and it also depends on what your into-what kinda plants your after?are u looking for yeild era,a mix of yeild and quality or just pure quality?i find the more a plant has of one the less it has of the other.
I begging some blood orange,og Nepali x goji f3 and strange brew ATM.id say get the og Nepali x goji f3 if u can get em as the best plant for yeild and quality iv ever had came from a pack o those but theyr hard to get. @Limonene says he saw them available somewhere.