I've been contemplating moving to one of the new font editors, Glyphs or RoboFont. I've been playing around with both for quite a while, but I realized that the only way to see if either will really work for me is to spend at least a week in each, trying to actually build a font. I've decided to have a go with RoboFont first. After spending a couple of days with it, I like it a lot. It does help that I've already got a lot of other UFO-based tools, like Superpolator, Prepolator, etc.
I would like to hear observations from anyone else using RoboFont.