Futaba in general is a top quality brand you won't be disapointed the 6 EXAS is a great intermediate to advanced radio I have one and it does all the things I need it to do. af far as CA goes there are several types they include balsa and foam types use the one that is for your model there are several brands I have used several and they all seem to work about the same just make sure you get the right type for your model .there is several thickneses each has its particular uses