I think this is a great idea. The Unorthodox series presents variants on each of the core classes. You can have both the rangers out of the PHB and all those here in your game. It adds some much needed variety to both PCs and NPCs; if you've been playing for years like I have, this will help cure the "cookie-cutter character" syndrome you may be experiencing.
I can't give much of an opinion on each type, except to say that they seem pretty well-balanced. The merits of each type would really depend on your campaign and personal tastes.<br><br><b>LIKED</b>: It's very well done, so pretty much everything. Like I said, you may or may not like some or all of the types described here.<br><br><b>DISLIKED</b>: A page with a quick system to help make your own variants of the classes would have been nice.<br><br><b>QUALITY</b>: Very Good<br><br><b>VALUE</b>: Very Satisfied<br>
[5 of 5 Stars!]