It's obvious to me that SDA's while being cut from the same cloth as JW's (Second Adventist movement) are not nearly as cult-like as JW's. JW's have become more and more extreme and controlling over the years, while SDA's are at least making some sort of forward progress. Think about it: They have hospitals, schools, even a few ordained women! They cut ties with a lot of the Ellen G. White prophetic nonsense, and actually celebrate holidays. Part of me is actually a bit drawn to them, but their remaining controlling tendencies immediately raise red-flags and make me run away. So I'd say SDA's are "cult-like", while JW's are a full-blown doomsday cult.
Oh, I forgot to mention that SDA's also produce literature and have stands at Fair's, etc around the USA and the literature looks eerily like the doomsday crap JW's put out. I mean it's really freaky how similar it all is. That alone gave me the creeps a few short years ago and I stopped considering them.