I'll try to put this as nicely as I can. I said this in the other thread too. You really need to slow yourself down, you're moving way ahead of your self and your capabilities. Majority of the crashes happen when people get cocky and too comfortable with their ability to do certain things. This seems to be the case for you, You like me, are still new and you just have not had enough stick time to be doing risky flying. You need to fly in a manner where you have full control of the plane at all times. For the first few months, you shouldn't be working on what "cool" things you can do but rather on the orientation of the plane, how it acts to certain stick movements, straight and steady flight... you brain needs to improve it's reaction time before you can do your crazy acrobatics.

I've been flying for a few weeks and have been extensively practicing my orientations, straight flights and so on. Now the stick movements get burned into my brain and I can undo what I just did with them. I no longer have to THINK about which way I need to move the stick, I just move it because my reaction times have GREAT improved. This is what you need to be working on. Otherwise you'll keep getting disoriented and you WILL keep crashing planes. These are not cheap.

Unless you change your methods, I'd give the dolphin a month and you'd be back here again for a "third" plane.