As stated above a single stage press will always be useful, you mentioned the 223. I load 223 and from time to time I will come on Mil, brass, I use the RCBS primer pocket swag. This tool will only work on a single stage press, and there are other examples where a single stage comes in handy. I would not buy Lee dies, and I do not know this for fact, but have read they do not work well with the LNL auto progressive press. I would look into a used single stage, you can find them dirt cheap. As long as it is not a real dinosaur they will take all current Dies and shell holders. If you go to Mid-way or Mid-south shooters my proffered mail order out let. They will list shell plates for the LNL by round.
I have reloaded for 40 plus years, but have 3 presses on my bench. One being the LNL AP, the next a Redding Big boss for the big stuff, and my old Pacific power -C. the pacific dose not collect any dust its used on a regular bases.