Futaba 6xas- or JR 622
Actually the amount of circuitry integrated on a board and with the use of smds can greatly reduce the amount of internal interference the unit generates. Most radios made since the late 90's use smds because every wire with any kind of signal on it acts like a small antennae for that signal. Thats the advantage of smds.... You can get each component closer together and most of your traces on a circuit board can be ran right next to ground plane which helps reduce radiated emissions. Which is why all radio mfgs use as little wire as possible. It's also alot easier to manufacture and stuff circuit boards. The hard part is using wires to each panel. In fact most of your circuit boards are modular, ie. wires with quick disconnect conectors on both ends.