mcahill,
As an ElkRidge owner, I look at the Bighorn Silverado and do not really see an upgrade from what I have. Many of the nicer Big Horn features simply aren't there in the Silverado. I don't know what the price-points would be, but if you'll look at the bigger ElkRidge floorplans, you'll find many of the same features as the Silverado. The decors may even be similar, so it could come down to what feels like home to you.
We look at the RV shows (two a year, here in DFW area), and haven't seen anything else in this class that beats our ElkRidge, even if we've liked some of the other floorplans (like the Sierra). Consider the factory/consumer relationship carefully! Heartland does work closely with owners to resolve any issues.
Good luck in your quest!
Erika