After I started loading all my photos into iPhoto on my new Mac, I started looking into Lightroom and Aperture. I downloaded the trial for Lightroom but didn’t like how it was laid out. It may be because I got used to iPhoto having one catalog for all photos and I could put photos into separate projects/albums within that catalog. Lightroom seems to want each project into it’s own catalog. Because of this, I started leaning towards Aperture but Apple no longer offers a trial version. After searching online, I was able to find the last trial version available from Apple and tried to install it on my Mac but because I’m running Mavericks (OS X 10.9) it wasn’t compatible. During the install, I was forwarded to the App Store where the latest version of Aperture is offered. I was then able to download that version for free.
I’ve been using Aperture for a couple months now and if/when Apple releases v4 of Aperture, I will definitely pay for the upgrade since I’m used to the functionality of the program. The way Apple is going though, the next version may be free to everyone anyway (Mavericks was a free upgrade, iLife and iWork apps are free, etc).