RE: Which should I buy? Whiplash or Dust??
My (2nd) Dust weighs 2 lbs 14 oz with digital metal geared servos and a Jett 46 in the nose.
As for build time, it will take you longer to cover than it takes to frame it up... 6 ribs, 2 fiberglass spars, and a carbon LE doesn't take long to put together.
I'm sure you'll thoroughly enjoy either choice.
Carl