Pretty easy to set up, everything you need - Lee 91551 Pro 4000 Press Kit 223 Rem

Bought this with the intention of also reloading 9mm Luger and 6mm ARC. It should be capable of reloading every cartridge under a certain length, and I think even .308 is still short enough, so it's a solid purchase. The powder measure doesn't leak, all of the parts just fit together well and work.
One thing of note is that you don't buy shell holders for loading, you need to buy entire shell plates for this model. You then disassemble the press and install the new shell plate after taking the old one out. I have zero idea how to do so, but i'll have to do it sooner or later to get to my 6mm ARC loading (Already have plate, dies, powder, bullets, primers, and brass, just need to install).