Ttown, here is a list of most of the Alden sellers. This is the best place to see what is available http://aldenofsandiego.com/alden-faq/buying/#stockist
Some sellers have "rare" colors (cigar, whiskey, Ravello ) they keep lists models they are making -some examples of who to call- a DC, TSM, and a few others. You have to to put your name on a list and wait for that makeup to be made or get lucky and call the store at the right time and actually get one in stock. The best way to hear about them is on this board. Just watch the board and you will hear about them I have found Cigar boot and shoe on the marketplace but that is right place right time.
From your above statement you are looking for what should you buy next? What is your intended use? Dress suit attire, business casual, jeans, wet weather etc and that will get you the suggestions you may be looking for.
Best of luck and watch your wallet...