I guess you're right about that. The atomizers really aren't very good though. I've never even seen them for sale individually. I just test new flavors in my stardusts - they're easy to wash out and the old flavors vape away in a few puffs. But the cones are $3.50 each and that is something you may want, so the atomizer kit may be the way to go. I still strongly recommend the vision cartomizers as the most noob friendly.
For a clearomizer, the Vision is as noob freindly as they come, except for the Fluxomizers, but they need a needle to fill.
the problem with testing in a Stardust is that it has a tendency to mute flavors. You might not notice it if you have nothing to compare it with, but if you vape the same flavor with a Stardust and an atomizer, you can tell. It's especially true with lighter flavors.
The atomizers in the kit are likely SLB. They aren't the greatest, but they would still cost $7-8 each if purchased separately. They're worth having around and you should always have one or two. The cartridges are trash, however. I don't understand why vendors still insist on including them. All I can figure is that there were 4 trillion of them made before cartomizers were invented and the Chinese can't figure out what else to do with them. So, they foist them on the rest of the world to ease the pressure on their own garbage disposal systems.