The Challenger press is a perfectly adequate single-stage press and will turn out ammo just as accurate as an RCBS, Redding or Dillon-- if you take the time to be careful. The Perfect Powder Measure is_very good, probably one of the best available. At first though, it'll drive you crazy. It has to be 'seasoned' by being used for awhile. Usually, running about a pound of powder through it will do the job. If you intend to load both pistol and rifle ammo you'll soon get tired of adjusting the measure. The scale is quite accurate, but it only measures up to about 100 grains. That's plenty for powder but if you want to weigh a bullet it's probably too small.
I started with an Anniversary kit and gradually acquired other stuff to make the process easier and faster. I now use a 3-hole Lee turret press, two Perfect powder measures (one for rifle and the other for handgun) and an RCBS 505 powder scale. I wouldn't even try to guess how many rounds I've loaded since I first started and the Lee line has always gotten the job done for me. YMMV.