Guys i wanna get syns guitar but the fact that the one with sustainiac is a little more expensive and that a couple of dollars make a huge difference because of exchange rate in my country annoys me. I have saved for quite some time and have enough money for 2 invaded syn but i dont have enough for 1 sustainiac and 1 invader. What is the difference between them that syn always uses the one with sustainiac and should i wait 2 more months to get the one with sustainiac?