Max is worth it in my opinion. There are lots of little things that work/flow better and keeps you from making mistakes.
Also, buy all the back years available. I got 2007-2012 for $100 after I bought 2013.
Same, I have at least 50 and having to use Drake or Taxcut to efile NR's, they should make it at least an optional part of the program, kind of hoaky that they don't, maybe partner with someone who does. Of course I won't forget that ATX customer support told me that "no one" offers 1040NR efiling.