Re: $200 kit vs. $600 kit - three times better?
To each their own. Having had both I'd never go back to unbalanced 2 stroke engines.
The split might actually be more in the 2-1 range anyway, aren't titans, for example, around $400?
You can buy a car for $20K, do you get twice the car for $40K?
While you put an extra 20 grand in play to answer that, the great thing about motorized bicycles is we're only
talking a couple hundred one way or another.