Reducing your Keys per piece (KPP / KPT)

[iphys]

When I play TDS, I use finesse to minimize the number of taps I have to do, because playing with a control pad is rough on your thumbs and it's more important to make sure your thumbs don't tire and slow you down.  If you're only playing TDS and not switching between other games that will screw up your timing, I find the autorepeat rate is slow enough that you can actually time when to release the pieces rather than tapping back off the walls, which can save you a little time and thumb wear too.