tough choices, I assume you have been on surlybikes.com? Read the information hole.
I only own 1 bike and she does everything except rider rough trails but I don't enjoy rough trails so that is okay. With that said I have contemplated a 26"wheel LHT with some big apple tires for riding rougher dirt roads as my 650b are to narrow (some will crack up at that as they are 32.8) If you want to be able to put racks on consider the Cross Check over the Pacer