Why do you like the better bottle so much.........er, better.... lol.
Just wondering, I'm still fairly new and have been using a pail exclusively.
I prefer better bottles because in my experience, I've had some very vigorous fermentations and I think the bottles do a better job as focusing the krausen for expulsion into the blow-off tube.
I've never heard of a properly inserted bung being shot out of a carboy, but you hear about fermentation blowing the lid off of buckets, literally, all the time.