MS3 isn't any more complicated than MS 1 or 2. It does have a lot of nice features and requires less modification as the extra features are already built in. You're right though - figure out what you need because buying features you won't use is a waste of money. Personally I like the flexibility of a more comprehensive system, USB, SD card, etc and I always build my own kits so that keeps the price down a fair amount. Aftermarket is really the way to go since you'll be able to tune all your mods, etc.