I have the Mini Grand. It is my first shotgun reloading press. I have loaded metallic for over 4 years. I have had this for about a year now.
I have not used it extensively but like it so far. It is easy to adjust crimps and it will load 2 3/4 thru 3 1/2 inch magnums if you want.
One downside is that I was disapointed that the universal charge bar (available for Mec only) will not work with the RCBS. That would make things so much easier. If I am loading a charge that I do not have the powder bushing for I just use my metallic reloading powder dump.
All in all I am happy with the press. It is easy to use and sturdy. One can argue that the powder and shot hoppers are too small but I don't load in great quantities.
If I had to do it all over again I probably would buy the Mec just because the universal charge bar will work in it.
Good Luck with whatever you choose.