I've found that if I judge a beer based on the contents of a bottle...I'm really doing no favors for the brewer. New Castle is a prime example. Bought a bottle in London at a TESCO one night. Took it back to the Hotel. Popped it open... YUK!! Poured the stuff out. Couldn't stand it. Few months ago...I'm in a Hotel in Tampa, FL. Hmmm...that's interesting...only two beers on Tap. New Castle and some mega brewery Light beer. I decided to give New Castle another go. It was excellent. So it got me to wondering...how many of these beers get stuck in a truck with a broken refrigeration unit while the driver whiles the day away at a topless joint. By the time the beer gets to your glass...it's lost it's flavor and the truck driver is out of one's...
On the other hand, I've had a beer that was the worst diacetyl-laden, uncarbonated crap ever straight off the tap at the brewery, whereas out of the bottle it was pretty good. I found out later that the bottle version is brewed by a contract brewery at a different location.