If you already have a Lee Perfect Powder Measure-- stick with it! Once it is properly broken in it will throw loads as accurate as any others.
I have two, one for handgun loads and the other for rifle loads. They've been on my bench for a long time and have thrown many pounds of powder. They now repeat_loads within 1/10 grain all day long. As with all other aspects of reloading, consistency is the holy grail. When I tilt the tube down to fill from the hopper, I pat the back of the measure three times and when I tilt it back up_to drop the powder into the case, I pat it three times again. I've experimented with patting it two or four times and the amounts thrown vary when I do.
Consistency.
I've had this discussion with lots of reloaders who swear by their Lyman or RCBS or Harrell's or Prometheus. But CONSISTENTLY throwing loads within 1/10 grain has to be the final measure of quality, not price, not exterior finish, not stainless steel parts.