I plan to use javafx for some online tools, where I need a sophisticated gui.
I had several silverlight vs. javafx discussions with my coworkers who are more ms affine.
My javafx pro arguments are
-more or less not proprietary
-access to the java ecosystem
-interesting gui concept
It would be great if someone could give me some more ammunition for the next round.
One fact is that you are comparing a microsoft product versus one that is not.
advantage: support of the community, and vendors, who all participate in its growth as a technology
disadvantage: a relatively new technology (just like java 1.2 in its days)
disadvantage: if you have existing java (non-javafx) libraries, you will either use it 'natively' removing platform-independence, or rewrite the whole library in javafx codes
I honestly dont know anything about it. But for developer support, and vendor support, and non-lock-and-stiff-and-pay-with-microsoft thing, I would consider javafx instead. If pretty gui (flash) is important, and you have a java server, you can look at flex.