Maybe I'm just bad at searching, but it took me awhile to find the information I needed. Couldn't find it on this forum, but I think the following page is relatively up-to-date:

http://thepointsguy.com/2015/03/unit...-your-chances/

Anyway, if anyone has any additional information, that would be much appreciated! (And more helpful than saying, "do a search"... ) I'm still learning how to navigate the forum, so please be gentle!