So money is a little tight while coming up on my next oil change, and since they seem to be direct competitors as far as price, I'm looking at Havoline, QSGB, and MS5K. All between $13-$14.50 per 5qt jug. Mostly short trips (10 miles round trip per day). This will be going in my 4.0 mustang in the 5W30 flavor. I've seen great UOA's from all of them...anyone have a reason for one being better than the other? On a side note, I my end up trying out what DNewton has been preaching about and get a UOA and start to stretch it out since this motor seems to like conventional so much anyway. All comments welcome, thanks in advance guys.