SC and "yellow signs" shacks
First forget about yellow signs shacks. Like the person said most of them are OLD (high 30s to mid-40s) and while you do get lucky (extremely lucky to find someone in the 20s, and usually it's high 20s) the chances of that is like 1 in 20. So why bother? Save our valuable shots for the sure thing.
This is why I want to give SC a shot. I am really not rich to go to the jiu-dian often, and like all of you I am looking for the best bang at the lowest buck. But I am hesitant to go alone because my local friends tell me horror stories about SC. I really think being "foreigners" they don't want to mess with you, but with the looks of "locals" they can really mess you up if you step into the wrong store.
Anyway since I noticed PM cost money I guess there's no way we can contact each other on this forum without paying.