Depends on my work / family situation. Had my S3 11 months and only done 5400 miles as I work from home, with even less travel to clients than when I first bought the damn thing. Also considering starting a family next year, so may go for something cheaper to keep costs down.
Had it happen loads of times in mine. Happens when dropping to 2nd at roundabouts with my foot off the accelerator. Kind of used to it now so give the gearbox a second or two to sort itself out before accelerating again.