Well that is a hard question to answer because there are so many trailer in the Heartland line-up.
if we look at just the Fifth-wheels, we need to place in 3 categories: Luxury/full-profile, mid-profile, and toy-haulers.
in the full-profile line the Landmark is the most expensive, the Big Horn and Big Country are both in the middle of the line with the interior decor style being the separator between them, and the Elk Ridge is the most value minded of the full-profile line-up.
In the mid-profile line the Sundance and the Greystone are in the same place just like the BH and BC, they have the same differences in the interior, and the North Trail 5er's are typically smaller and lighter than the Sundance and Greystones.
in the toy-haulers the cyclone is a step above the Road Warrior, but the distance is shrinking from what I can tell.
here is a heartland page with more info on all their products.
http://www.heartlandrvs.com/products.html