lee load all 2; mec 600 jr.; re-loading

I came upon a couple of Lee Load all loaders. What are the positive and negatives on these machines? Thanks

I am pretty new to target shooting and am seriously considering starting to re-load. I have run several calculators and realize that it won't be that cost effective, and while I accept that fact it is still frustrating. I want to re-load because I believe I will enjoy the process and the pride...