ZIF sockets are the way to go. They also add resale value (a little, not much) to the ECU if you ever sell it.
I do the whole fuelmap switching deal.
Right now on my s300 (different, I know, but does the same thing.) I flip a switch when I get up to speed on the highway to activate the 'crusing tables', basicly tables that I designed for fuel efficency. I'm tempted to change out the switch with some cruise control switches on the steering wheel (I don't have cruise control in my car).