Want to play me in 15|10?
Playing fast in 15|10 game
Once again my opponent ended with 8.00 min while I only had 1.53. I won despite playing a dubitious opening (for the psychological aspect of putting my opponent in unfamiliar territory), but with much careful thought in the first 10-15 moves.

Yeah as long as you're not consistently running out, use the time you're given. No point playing blitz vs someone using 15 minutes.
Time management isn't something I think I've mastered but I don't run out much and I think I'm not scared of using a few minutes on a tough position.
I decided that I'm fed up with playing fast games where I don't really have time to explore my options and take in the entire board (subsequently losing), so I started playing the 15|10 games.
I found that indeed my game has immensly improved, and I even managed to win a tourney yesterday (though the last opponent accused me of cheating).
That said, I found that most opponents don't use the time properly, and after 10-15 moves they have more time than they began with! In the tourney yesterday 3/5 opponents ended with twice the amount of time I had.
I played someone before and I only had about 8 min left while he had 15+. I was also at least a piece up! He then resigned because 'I play too slowly for his tastes' - but if you're in a rush, why not play 5|2 min games?
Another where my opponent just rushed headlong into moves: