I was looking for a very simple long rifle, in either .50 or .54, with a swamped barrel. Length wasn't a factor (well..., I don't consider rifles made with barrels under 38" justify being call "long rifles"), and I found a good deal on a used rifle with a swamped 38" barrel in .54. So I bought it. Absolutely one of the best purchases I've ever made.
I then bought a 42", straight sided .40 for target shooting, which is nose heavy, but I wanted a gun good for standing-unsupported-position (aka offhand) and I like them nose heavy for that. It's also a small game rifle, and the weight isn't a factor for me.
The rifle that I schlep through the woods, trek with, carry a lot is the shorter, swamped barrel rifle, so I'd recommend you get swamped if you're doing more than bench or target shooting.
LD