to a beginner these upgrades are not necessary. but the higher quality servos and gyros will prove itself once you get the hang of it. its all about precision. you're probably not doing anything fancy yet but when you learn beyond hovering install the higher quality electronics and you'll see why people pay top dollar for them. with higher headspeed you'll need the expensive stuff to handle the higher torque that comes with it but if you're happy with just putting around you'll be fine with what you got.