[rainfreak]

First, I understand your frustration. That said, if you really want to resolve the issue (for now and within your control), do this:

1. Root (full with NAND unlocked).
2. Install a custom ROM (or not, this one is optional).
3. Install autokiller (free in Market but REQUIRES root) and choose the preset Agressive or Extreme.
4. Buy and install SetCPU from the Market (REQUIRES root) and create a new profile for screen off = 246 MHz).

Then sit back and enjoy your EVO with moderate to heavy usage for 24+ hours on a single charge. I have done all this (and run the latest Fresh ROM) and I love my EVO.