Has anybody tried both Flex and OpenLaszlo? OpenLaszlo is already open source and compiles to both flash and ajax, so from the outside it looks like a more attractive choice. Any opinions on how they stack up?
Another advantage of Flex over OpenLaszlo is the Flex IDE (aka Flex Builder). It's a great product! (Note: Flex Builder is closed-source, and a bit expensive -- $500 I believe)
Despite the fact that Flex is Flash-only, I think they did a great job integrating it to the web stack. For example, Flex uses CSS to define the component styles. ActionScript also feels pretty much like Javascript. As a matter of fact, when I started using Flex I had no Flash experience whatsoever and was up-and-running very quickly.