Pros:

-Animations are great and well crafted
-The "bendy" look on his legs make him look sort-of lanky and stretched out, which is how Slendy should look

Cons:

-Still has a pink tongue, (although an author named "Disapear" has already made a black tongue mod to go with Slendy)
-Still has green smoke coming from his body (although I don't know if there's any way of removing it)
-Still has Smoker voice, so it doesn't feel like a silent stalker, and IMO that's how Slenderman should be
-No custom arms for Slendy when playing as the Smoker (he still has Smoker arms in firstperson view)

Conclusion:

This mod is definitely worth the download for all Slender Man fans as it has the perfect animations and look to it. Although there are several flaws I have pointed out, these are of course only minor flaws and really don't take away from the experience all that much.

Overall, I give this mod a 9.5/10 because it is a great mod and it will have the Survivors asking...

"Do any of you guys have 20 dollars?" xD