I have both varieties and have tasted both varieties. I would highly recommend planting both.
S8 or Sugar Dragon is a universal pollinator and has multiple crops a season. It's production is very high, probably due to the very small size of the fruit but the eating quality is exceptional. Because it produces so many flowers throughout the year, you will have a better chance of it cross pollinating any other variety of DF planted in your yard. The flavor of the fruit is very sweet with a hint of berry acidity common to the varieties with purplish pink colored flesh.
I highly recommend also planting Frankie's Red because it will extend your season. FR ripens from about now until Winter. It ripens kinda in between the red/Purple/white and the S Megalanthus but there is overlap. To really extend the season, also plant the S/H Megalanthus for very late fruit. The FR is a sweet fruit with flavor that is a mix of the Megalanthus and the Red/purple varieties. The fruit are typically larger than the S8. The fruit also has spines on it like the Megalanthus so they are less likely to be eaten by varmin.
Simon
Ah I see. So both has their pros. S8 being really sweet with hints of berry while the FR extends your fruit harvest.
I'm glad I picked up a S8 cutting. But unfortunately the FR is so hard to get ones hand on. I found a site that sells it but I recently bought a cutting from him and results weren't good. Item arrived damaged and most likely damaged during transit. So I was left with a few inches of cutting...ugh
So I'm really hesitant in ordering from him again. The cutting was only wrapped with a thin sheet of newspaper like material and then boxed. So there's goes my chance of getting a FR from him.
Mattslandscape site for some reason is not working .
I guess I'll probably have to wait until it becomes more readily available.
But thank for the insite on both varieties.