I was seriously looking into using Swish - quick, easy, and rather robust for what I needed then - and instead got interested into learning Flash. Swift3D and Vecta3D both came out, and I stuck around... basically, I learned flash faster via Flashkit than any book or class.

don't get me wrong, I'm still not all that in flash - haven't opened flash in over 3 months - but I'm tons more comfy with the program due to Flashkit.