I would keep a manual any day!!!
less wiring, less computer shit and you are in control of the car.
TIM TIM TIM a smg is a manual auto kinda thing. on the bmw's like the 05 M3 (just crazy fun to drive) it has a shifter like a manual but you jsut move it up and down like shiftronics. but...... there is no park, or drive shit. i think it only has R, N, +/-.... takes a bit to get used to but its really fun (no clutch peddle)
the coolest thing about the BMW set up is that you can set the clutch to shift as fast or as slow as you want
but in the end. ill take a 4,5, or 6 speed anyday, just makes me feel more in control and besides. my girl likes playing with my shifter

(ftmfw!)