Performance of Android 2.2 vs. earlier versions One reason that I haven't switched to Android in the past is that it has seemed sluggish when I've tried phones that run it.  I see that Google claims performance improvements of 4x to 5x over previous versions, but those numbers are based on benchmarks, not on real-world use.

Does anyone have any information about how Android 2.2 affects typical smartphone usage.  Not just making calls -- scrolling through a long contact list, reading emails, browsing the web, navigating photo albums, playing games?  Ideally, a side-by-side comparison of device X running 2.2 and an earlier version.
This page has a couple of benchmarks that compare not only a Nexus One running 2.2 vs. one running 2.1, but also includes iPhones and the iPad. In both cases, the Nexus One running 2.2 outperforms the 2.1 version by over 2x.