I started with the Challenger anniversary kit myself - it will certainly get the job done and the price is right. After 10 years I still use most of the original pieces regularly, although I did buy a Classic Cast press a few years ago when I built a permanent bench in the man cave. I still have the Challenger mounted to a portable top that I would clamp to the kitchen table.
The Lee scale is plenty accurate but I much prefer using the Lyman/RCBS style scale. And the little Lee chamfer/deburring tool leaves a lot to be desired - it works but takes more effort and leaves a ring around rifle cases. It's cheap to replace with something better. The kit didn't come with a powder trickler either - but for the most part Lee's stuff works at least as well as other brands, sometimes better and always cheaper.