I just installed and have been using aerize email alerts on my storm. I is very nice and
elegant. The fonts and layout are crisp and clear, buttons are perfect size for clicking on the touch screen and it runs smoothly.
I highly recommend this app for the storm.
You can pick up version 1.2.0 at the following link. http://aerize.com/blackberry/software/alerts/
Others feel free to weigh in on your experience.