From the spoilers reported on NPR, it was a satisfying ending, at least for me. I've only seen a few minutes of the series. HBO was never in our budget. I noticed that the first season is on DVD at the Goffstown library, but we haven't decided whether to get it out. Even if we do, we'll still be six years behind everybody else. Rod says it's probably too violent for me, but he could be overprotective. We saw the first season of Rome on DVD, and liked it.
I haven't given up on watching the Sopranos some day. (It could show up edited on broadcast TV, as Sex and the City did.) So I like that there wasn't a definitive ending, because when I finally do get around to viewing it, the episodes won't be colored by my thinking "This is a show about a man who eventually..."
The spoiler I'm worried about is the day after the last Harry Potter book comes out. It's a wait to get those books out of the library. That hasn't mattered in the past.