My wife and I own 19 H&Rs; 17 rifles and 2 shotguns, all complete firearms. You'll understand I'm prejudiced. We gave up on the barrel swapping early on and fitted all of them to their own frame and stock. Complete guns store easier than loose scoped barrels, and the one you want is ready to go when you are. Also, swapping barrels effects accuracy by not having a constant forearm fit.
I don't know what kind of customer service Rossi offers, but H&Rs has become outstanding. In addition, they're made in the USA to our quality standards, and are helping to keep American jobs at home.
Especially when dealing with kids, with deer rifles and shotguns, the half pound weight difference is not an asset, but a detriment. Lighter weight = more felt recoil.
In short, I'd go (have gone) the H&R way.
Pete