I agree totally. I just got my BCP. I need it for testing that I'm doing, but the HB2 is a better deal at $164 delivered on eBay and $188 in online stores. To upgrade the BCP to a HB2 would cost over $90, and that's assuming the aerobatic upgrade comes with an 8T pinion. I am a sucker for yellow helis, but the BCP canopy will fit the HB2 if you add a 2 1/2" CF rod for the bottom mounting holes.
So, out of my 4 helis (5 if you count the BladeRunner) the Esky Lama2 is the easiest to fly, of course. And, it's a great trainer for doing pirouettes, figure eights and stuff. For the $105 I paid for it, it's better than a flight sim.
My DF36 needed a different gyro, so $100 later and a new Futaba GL240, and another $100 for a brushless Align 420LF and 25A ESC plus $50 for a good LiPo, and it flies very well and hovers easily. But, it was a bear to set up so it would fly that way.
My Walkera DF4 was hard to learn to hover, but it finally happened suddenly one day. It's fast and cheap to repair. I can tear it down and rebuild it completely in 1/2 hour. It takes that long to change the main shaft in my 36. It's fussy about blades. Even balancing them and setting the tracking doesn't always work because the plastic blades for these things are not made to close tolerances. I have to buy 3 or 4 pairs and mix and match them on the heli to finally get a pair that performs well while left loose and won't wobble. But, once that's done, I can set it in a hover for as long as 10 seconds with no input and it will stay within a 4' x 4' area. I can fly slow circles in my office with no trouble because it's so stable.
My Blade CP gives the impression of being more of a precision heli than the DF4. It's a lot quieter as far as gear noise, and feels smooth. It's also a lot easier to set the altitude and hold it. The DF4 often wants to go up or down, but the BCP stays. I'm not sure it this is because of the CP, or if it's the electronics, but I've ordered an Esky 4-in1 (same as the BCP uses) to try on my DF4 (with a different Tx) and I'll find out. So, you'd think that the BCP would be my heli of choice for office flying (aside from the Lama), but it's not. It's just not stable or subtle enough. I can fly patterns in my office, but it's not a relaxing experience like it is with the DF4. It's a better helicopter for forward flight and zipping around outside, but for slow, controlled movements I find the DF4 better.
If I was going to recommend a trainer to someone (besides a coaxial heli like the Lama or BCX), I'd recommend the HoneyBee FP. It's almost the same as the DF4, but with much better electronics.