cheapest way to get hemi 3g going?

I keep sitting on the fence over this, ha.
1. Hotwire i can buy it, its premade, uses factory ECU, don't need to tune it(or as much?)
2. Megasquirt, gotta make it all, lotta work, doesn't use factor ECU, needs tunes which appears to not be so easy for a new guy to the game.

not seeing pros really for this MS3, seems its a lot of work and hacking, to make it work, versus just going to hotwire and buying their product.

Other then cost, but that seems to be minimal too from these posts.
Am I missing anything?