If you want performance...

1. Do a complete reflash (unless you are convinced your setup is healthy)
2. Don't use widgetz
2. Install CSSU.
3. Install KP49.
4. Enable SR.
5. Change CPU speeds 500 low, 900 high.
6. Put swap on your SD card.
7. Apply some virtual memory tweaks.
8. Investigate compcache
9. Investigate swap reset script with cron/alarmd.

Do the above and your device will be as someone said, 'snappier than a crocodile at a penguin parade'.

// EDIT

Above is more or less my setup (except the swap on SD) and I see around 2 days battery life, and christ knows I am a serious fiddler.