[binions]

I don't think in terms of "groups" as defined by S&M. I doubt anyone really does. I know S&M don't - they have said so.

I think in terms of:

Suited
Offsuit
Pairs

This is my initial "filter." When I get my hand, I categorize it into 1 of these 3.

Within each category, I know when (ie what position) a hand is profitable to play, and why and when to raise or fold it preflop depending on the circumstances.

This knowledge has come from experience, reading, computer simulations, and working on the math (odds).

S&M "groups" are fun to debate, but they aren't the way I think about starting hands.