Just as Mazar said you want a nice female and a strong male but to bring out those autoflower traits you would have to backcross them back to the male to bring out the autoflower traits more until than you might get some phenos that autoflower and some that might not till it is stabilized.......... I heard that BC Mango is some killer ...... great genetics from BCSEEDS
BC has FIVE different cannabis cup winning strains out of the many they offer, consisting of: The Purps, God Bud, Sweet God, The Black, and Mango
God Bud - First cup winner, taking #1 indica cup back in 2004. 2005 it took down #1 & #2 best strain overall in two seperate comps, as well as a High Times strain of the year. In 2010, it resurfaced as being recognized for Top 10 Canadian Strains of All Time. The rep on this strain never ceases, and the yield will put a smile on any commercial croppers face.
The Purps - This strain came out in 2007 to immediately win the High Times Top 10 Strains of the Year, as well as High T #3 Sativa Cup. In 2009, it took a repeat of the #3 Sativa Cup, following with 2010 award of Top 10 Canadians, right next to the God Bud.
Mango - This came out in 2009 to win the High Times Top 10 Strains of the Year, respectively.
With The Black and Sweet God both winning two awards each from 06-09. I do not have experience with either of these.
With that in mind, I think the God Bud & The Purps are shouting out to be the best. The people awarding these strains certainly know what they are looking for, so I do not doubt the potency/flavor in the descriptions. I wouldn't necessarily discourage the Mango, as I've had it before and thought that while it wasn't the stoniest of buds, it was by far one of the tastiest fruit flavors I've ever had. You certainly won't get that flavor from the others. So it's completely up to you and comes down to what you're looking for. When looking at either of the 5, you're buying a potent plant regardless.
Anyone who goes onto bc's site, checkout the 'Plan B seeds BrainWarp'. It's a newer hybrid consisting of Kali Sativa & AK47. Supposed to be AMAZING. Don't even know if it's hit the competitions, yet. But I love energetic sativa head highs, so I can't wait to blaze this girl down by next spring! Anyone who reads up on some of these or has grown them, let's hear it! =)