For bag appeal, I would check out Elmer's Glue (Gorilla Glue #4 x The White) by Relentless Genetics...
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...and Sour Bubble by BOG Seeds
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Strains are like women... choose them based on the looks only and you'll be most probably fucked up! lol.
Peace.
Most all strains today will get you good and stoned. Some more potent than others yes but bag appeal is the number one thing people look for next is strong smell. Nobody I know buys weed for how potent it is.
1. looks good
2. smells good
3. taste good(usually goes along with strong smell)
get mo gg4 x fbpk no. 6
I second the white crosses. A good WiFi cut will impress people. Also, many cookie cuts or hybrids will do the same.
Density is also hit or miss with people. Imo it's one of the indicators of good growing, not including the equatorial 14+ week fluffy sativas. Most people are looking for solid flowers, but I have one guy that will not take them. OGKB units, for example look like 6 ounce bags of some other strains and he doesn't even give them a second look.