I have not flown one, but the CX can be a lot of down time also. In the beginning I spent almost half my time with the unit fixing/modding over flying it. Spend 30 minutes fixing the CX and it could bend a part in one battery pack. Real heli's are the same, but that is the fun. Taking them apart, trouble shooting what is wrong and getting the satisfaction out of fixing the problem.
I am sure it also depends how aggressive you fly. One can just hover or do a little forward flight without problems, once they speed it up, fly higher, do some little tricks, opps, back to the workbench.