Almost two years ago I graduated from iPhoto to Aperture for managing my photography collection. There were too many files for iPhoto to cope reasonably, and I felt I needed more flexibility and power to post-process. When Aperture 3 was released, I duly gamma-tested and then upgraded, and apart from its ability to crash more often than Aperture 2 I would say that the upgrade has definitely been worth it.
There’s been a lot of talk both recently and in yearspassed about LZMA compression. With any compression algorithm come benchmarks and these are often in the form of compression-rate, decompression-rate and compression-ratio: