In patch 3.2, regular flyers will get to 150% speed. That finished to convince me that my gold is better invested in other things than epic flyers.
Me too, although it'd be nice to have an idea as to how far off that is!

I have them on my Hunter/Druid team, but mainly because I use them for various gathering skills and I really wouldn't be without the epic flyers for those. Especially the Druid and Herbing.