yes and no.

Sure your getting your money in with the best hand, but if you only have one or 2 buy-in's occasionally i'm going to tryand get cute with AA, obviously you need to know when you are beat with it, after seeing the flop/ turn, but AA can also get cracked when you push preflop.

The only reason i suggest this is because if you only have a few buy ins i need to make the most of my 'good' hands- and extract as much from them. I mean say you push with AA and everyone folds- that opportunity is gone, sure there are risks involved in slow playing it but hey- i like to live dangerously occasionally!