I raised this very question a couple of weeks ago with Allen at H&B motors here in Berkeley, who have been tuning 2002s since the very beginning. He strongly advised against going with the 284, saying that my motor will never run as smooth and be tuned as nice as with a stock cam. Without going into details, he said, adamantly "It's just one of those things you learn after doing this for 35 years and trying out all sorts of different combinations.''
That's just one person's opinion, albeit soomeone who's been under the hood of a lot '02s. You'll need to weigh that against other people's real-world experiences.
I personally tend to think it's probably not worth the cost, unless this is something you can do yourself relatively inexpensively.
Good luck,
Michael