I enjoyed reading your review. Having been a user of C1 Pro for the past 4 years or so, I felt they are falling way behind in many areas of the RAW interface program and decided to set out and find a new tool. I did a 1 week use of both Aperture (1.5.1) and Lightroom 1.0 to try and decide what applications I would end up using for the next 4 years.
The MAJOR deciding factor is Lightroom was simply a DOG!!! There was no contest (this is on a Power Mac Dual G5 2.0 Ghz/GForce Ultra 6800 DDL Video/4.5 GB RAM). Every action felt like it was on molasses. In short, Lightroom was (and still is) simply too slow for productive use on my machine. This was from waiting several seconds to load images to very slow updates on any adjustments (1-2 seconds).
Aperture, on the other hand, simply glided most of the time. If too many filters are added, it hits a wall but even then is still a good 50% faster than Lightroom on a good day.
And as for the Interfaces. Allot of thought seems have been put into each one, but I found myself fighting the interface a bit more on Lightroom. It might be that I never used ACR so I am simply not used to it at all. The metadata browser was right cool, however, and hope to see in Aperture in the future.
Makes me wonder what the differences are. Could this be as much the camera used (Canon VS Nikon for the review), video card, memory, processor?