Bacon boy! In reply to your original question.. I've flown the Pic Pro and the R22 now.

The Pic pro (mine is running brushless) is a FAR more "serious" machine than the basic or HummingBird. It is a LOT more responsive than the Hummingbird. It maintains a steady hover height much more easily but requires a lot more concentration.

The HB is a piece of cake to fly indoors, due to it's relatively low head speed, fixed pitch, and duller responses. The Pro needs a lot more care. The HB has crashed into all sorts of stuff in my house and is fine, as is my furniture. I would not want to crash the Pro indoors.

I spooled her up first time and immediately tipped her over! Then I tried again, but with more care. I have not gone outside yet, but I can tell it will be 100% better than the HB.

I have to say, unless you have a good large indoor space to fly the Pro, keep the HB for indoors and get an R22 for outdoors. I can't express how easy the R22 is to fly.

On my second pack yesterday I was flying over my house for the first time ever, and I have a very narrow garden!

The R22 is like 10 times easier to fly.

I'm getting 7.5 minutes on the R22 with 3000Ni-Mh, and about a minute less with 2400Ni-Cd - both 8 cells.

The Pro is running on - Hacker B20-36S, 9 tooth, Phoenix 10 ESC, GWS 50 for tail, HLG200 Gyro, E-Tech 1200mah Li-po High current battery. I have not managed to flatten the battery yet!! (although you should never flatten a Li-Po).

The B20-36s is supposed to be a "tame" motor. I'm running on gov mode at 85% throttle and if I hit the throttle it would end up in the attic in seconds!

My summary so far

HummingBird/Pic FP - Perfect for indoors. Tough, cheap. Sh@te outdoors.
Pic Pro- Need big space indoords, very entertaining, should be good outdoors in moderate breeze.
Eolo R22 - Fantastic Outdoors, unbeatable, could be flown by the brain-dead!
Eco 8 - Awesome, large, fast, frightening, much more flighty than the R22 due to being much lighter and the R22 having duller cyclic responses. Want 3D, then this is the one.