AnTuTu is quickly becoming one of the most popular benchmarks on Android, and for good reason: the devotion of its developer to providing timely updates is admirable (even if his talent for GUI design isn't... at all). The bump to version 3.0 brings a host of major changes, including a brand-new OpenGL ES 2.0 3D benchmark, along with a new 2D benchmark specifically for testing (wait for it) 2D gaming performance.
Do you enjoy knowing how fast things are? Then Qualcomm's revamped Vellamo suite is probably something you should check out. Vellamo has been the web benchmark of choice on Android for some time now, but this new update brings some major improvements.
First, the UI: it's completely different. It's actually really nice, certainly the prettiest benchmarking tool I've ever seen on Android (I mean, who really cares, but still). Just look at the screenshots:
The next big change comes in the form of a brand-new CPU benchmark called Metal.