Personally, I chop with a rake and I don't chop with a button drop. The Bay Area casinos I play at rake $1 for a chopped pot (i.e. no flop), and charge a full $4 once the flop hits, no matter the size of the pot.

That's a huge difference, even at 20-40, or so I think.

When playing the Wynn recently, I discovered that no flop = no rake at all, and that seems even better. :-)

Add in to that the issues concerning table friendliness (and there is negative EV in being perceived a jerk in most circumstances), moving the game along, position, etc., and it becomes a no-brainer.

As for games with a drop, which one local casino used to use, losing $3 per round (on the button) no matter what was a strong argument for pursuing every edge I had, including playing the blinds.