OG Droid. Rooted, overclocked, and still slow as molasses. It was never like that, but it seems to be suffering from the Windows Syndrome - Fast at the beginning, but as the software becomes more resource hungry, the slower it gets. I've been grumbling with this phone for the last 6 months.
That's why I want "The Prime" - super fast and efficient now, but undoubtedly will become slow within the next 2 years. Hopefully this phone will support all it's software for that time period.