EVERY Walkera is difficult to get off of carpet, so, you get MIA skids instead. The stock skids are just about useless, IMHO, and have to go. The tail needs to be protected better than it is. You need a few tail rotor blades as spares because the plastic is thin and breaks easily.
The CB 100 is much easier on your brain than the 4#3b. I had one for a couple of weeks and had to get rid of it. All I ever did was work on it to try to get it to fly better. I am more than disappointed with the 2402 transmitter. It offers you nothing over the 2401 and is heavier. The batteries are 500mah and 15C instead of 400mah and 10C and that, for some reason makes them twice as big and it takes twice as long for them to charge.
I wanted something that had a little more heft to it so I could fly it outside in nice weather as well as inside during the Winter. I think this is a drawback with teh MSR. It seems too light for outside.