I LOVED those books! I love that they were in eighth grade for like 15 years! I had most of them up until I got too old to read them anymore, and the game, and the movie ... and of course, my friends and I tried to start our own BSC.
I liked Kristy (because she was a leader; come to think of it, I could see Lois being like that as kid, too) and Stacey (because she liked to shop!)
A couple of months ago, I somehow stumbled across a blog by a woman who grew up reading them and is now re-reading them. Her reviews are hilariously snarky.
http://claudiasroom.blogspot.com/