The Giga is the ultimate park bike, and I feel like with the linkage-driven single-pivot suspension design, it does a slightly better job of pumping, generating speed in corners and jumping. But I feel like the Horst link design of the Mega does a slightly better job tracking the ground in general, especially under heavy braking. Really though, for a lot of my day-to-day riding, the Mega is a little too much bike already. The Giga would just be even slightly more "too much" I was looking very heavily at the Reactor, but I really wanted a size Small, Mixed...