HBFP seems to be really popular..though i'ver heard the Falcon40 and WalkeraDF4/Sabre as quite similar
w/ interchageable parts.

I wish i can tell you how the HBFP is...but i can't even fly it...

like you im still stuck on my CX2[got 2]..

I upgraded to SuperSkids as that was the first thing i broke...i bought 2 pairs of main rotor and 3 of the tail but
it really seems sturdy and has not even broken those...i though it would be like the CX..where the rotor
would brush lightly and it shatters into pieces but its not like that at all....im even thinking of selling the spare
blades as i don't think i would even break what i have on it now..

i keep hearing people put upgraded blades like the kyosho m42 or GWS blades...and even wood blades etc.
Orion brushed motor. this is basically for perfromance..and also GWS direct drive tail..etc..im going to that path eventually as im just doing research for now..

also i have a Blade CP but i would advise you not on those...unless you have $$ to spend plenty of time on your hands on replacement parts while you learn on it.

an FP indoors would be great plus they are simple/quick/ and cheap to operate..u can use your CX batteries on them as well...but no Aluminum to upgrade to.