Cinderella 99 is the "perfect" sativa. Easy to grow, very fast finisher, and a speedy high. It's fairly hard to find pure C99 in bean form right now, but the community has been requesting it so there are more than a few breeders working with C99 right now. Joey Weed and Cannacopia have some C99 crosses available at Hemp Depot for good prices. Wally Duck also has some cool crosses over at Seed Boutique, though they are a bit more expensive. Reservoir, too, has a C99 project right now. Not sure when the seeds will be for sale.. Late summer I think?

There's also Kalichakra from Mandala for dirt cheap available at Seed Boutique. Mandala has solid, cheap genetics that are great for beginners.