I've heard this one quite a few times. Let's see. You want to upgrade part "A" to the nice fancy one so you order it and when it arrives you try to put it on your Heli. The first thing you notice is that it doesn't really fit. After playing around with it a while you finally call the vender you bought it from only to discover that in order to use part "A" you also need to order parts B,C,D,E,F,and G at a cost of $MEGA BUCKS$. Then when you finally get it all together the whole mess doesn't work half as well as the stock stuff did (but it sure do look neat). Yep, been there! Too many times I might add.

Maybe the more experienced people here know how to deal with upgrades but as Dougwo said, us newbies should stay clear of the upgrades until we know how to fly the things. Personally, I'd rather save my money (what little I have anymore) for that Raptor 90 I'd like to get someday when I get good at flying instead of sinking it in a Blade CP.