To some degree I'd have to say it depends on what you consider "worth it?" I absolutely love mine. I bought mine over 12 years ago and don't regret it a bit. I absolutely love the hammer forged spiral barrel. I won't say it's the best out there, but I like it for the uniqueness and not necessarily for it's accuracy. Although I've had mine re-chambered and most other components re-worked and am extremely happy with the final results.
I like my heavy barrel for the way it handles the heat of a lot of shooting. It may or may not be more accurate I don't know because I changed the barrel probably 6 years ago.
Heavy they are. I had a heavy barrel for years and didn't really see an accuracy improvement over the standard barrel. It was very accurate but I got tired of the weight. I can shoot a sporter barrel just as well and not get a workout picking it up. My opinion only though.
I have a factory target bull barrel 10 22 and a custom with a Tactical Solutions fluted, threaded barrel. The factory bull is much easier to shoot in my opinion because of the added wieght. The custom has an overmold stock is easy to pack around, however it is harder for me to hold it still as compared to the heavier gun, that includes shooting off on a bench.