TopWinPrio gives a priority boost to your focused application window
Head to the options window, and you can set TopWinPrio to run at startup, boost Explorer processes, and change the update interval. You can also switch the default process priority from AboveNormal to High or Realtime (danger, Will Robinson!) Your mileage will may vary, of course, though I've found TopWinPrio to provide a nice shot in the arm for my Atom 270 netbook.
On my desktop and full-size laptop, however, I don't see myself switching from Process Lasso. It's much more configurable and offers a slew of additional features.