Technically the AK 74u is a carbine of the standard AK 74, but back to the point, like everyone said depends on the map, 74u is more for fast play for me, but the 47 is perfect for medium/long range.
Just my 2 cents.
The best thing when your drunk is doing that girl that you thought was ugly as hell and not realizing you're doing it. Not sure if that's a good thing though...