I'm intrigued because you do not include the "standards" (Hulu and Netflix)!
I'm certain you've spent more time researching this than I have/will.
Are you primarily addressing the request for watching sports or do you see this as a total solution?
Is Sling TV essentially Hulu on steroids? Would I miss anything from Hulu if I swapped these two services?
I assume that Netflix is a different category.
I really don't care about the sports channels, so much of the benefit of Sling is lost on me.
One point I believe is accurate is that Sling TV Orange is $20, but only allows streaming to one device at a time, while Sling TV Blue is $25/mo and allows 3 devices at a time along with more channels (although orange has some shows blue doesn't and vice versa).
Edit: I found that Tom's Hardware did a good summary of Sling TV:
http://www.tomsguide.com/us/what-is-sling-tv-faq,news-20474.html
For me, a major advantage of Hulu is I can watch a show when I want instead of needing to make myself available when the show is broadcast. I've never had tivo, so am not sure how easily that would replace Hulu's ability to watch a few of weeks of past shows.