Both the Stardust and the Stone are very good vapes, two of the best I've tried, and they both completely blow away the egoT imho.
The Stone might require more fidling with it to get it right but the Stardust just works out of the box, unscrew the mouthpiece, fill, vape 'til it's out and repeat.
The only 'issue' I can see is the price and of course they are sold out. As long as they last a week, I figure it's worth every penny.
Granted, we run the risk of popping cartos and attys at any time, it just hurts a little bit more with the more expensive ones. But, these are worth it just to experience the 'perfect' vape at least once.
And if I remember correctly, the egoT attys were not cheap either which makes the Stardust an even better deal imo, hope that helps you out.