I always liked the sound of an aftermarket gear system that replaces the timing chains, man those things sound nice when they got up to speed...
Timing belts are nice smooth feel to them no doubt.. but when you combine them with an interference engine design, your entire engines lifespan is tied to that thing failing.
That literally is the weakest point in the engine.. seems insane that any manufacturer would combine a timing belt with an interference design, but its made a come back in recent years to improve fuel economy and decrease engine size... At the very least use a chain when developing an inteference engine ... sigh.