Should you choose the maximum resolution option, you get the maximum file size I shoot and export. Everything else is the same as above, other than the all important file size. The JPGs are still exported sRBG and are not reduced in size at export. This will give you the option to crop when printing AND it should also result in more color depth at print.
I shoot with both a D700 and a D7000 at mini shoots.
This link explains some of these concepts much better than I can:
Design215 Toolbox – Photography Printing Guide – DPI vs PPI
This is also a discussion I recommend: