I start looking for all-in only when I have under 6-9 BB's I think that 10 or more is enough't to just call BB with good cards (A-J A-Q K-J) and if need fold then after flop.
Is this to be funny or serious? If serious, please explain reasoning.
Just being contrarian a bit. BB makes no sense to me since I use M. At times you are just card dead and can shove garbage and hope. Depending on the tourney structure and stage I prefer something co-ordinated at least. So if M=5 in HJ, folded to me, I shove any pair and middle gappers if they are sooted.