Although prices vary, you will typically get a better hotel for a cheaper price when compared to a Disney Resort. With the exception of the Wyndham Garden Lake Buena Vista, all the hotels have interior entry. To me, that feature alone is a huge step up from either a Disney Value or Moderate Resort. I also like the fact that the Disney Springs Hotels are more compact, midrise or highrise buildings. The distance from the bus stop or lobby to your guest room can be measure in feet, not tenths of a mile.
I also agree with what
halfpintpeggy wrote about dining. Being able to walk to Disney Springs or just offsite to the restaurants at the Crossroads Shopping area is a big perk. And I think
a1tinkfans is right on the money when mentioning expectations. You shouldn't stay at Disney Springs Hotel and expect the same type of vacation as a Disney Resort.
To manage expectations, make sure you consider theme park transportation. For more information, check out this thread:
https://www.disboards.com/threads/disney-springs-hotels-bus-information.3653605/
It's also important to realize that while the Disney Springs Hotels are on Disney property, they are right at the edge. Here is a aerial photo from Google:
Source:
https://goo.gl/maps/kB5E6aapHsj
Here you can see four of the seven Disney Springs Hotels and their proximity to Interstate 4 and State Road 535. Being that close to the "real world" might be a deal-breaker for some people.
As for deals, make sure to check out the marketing association website for the Disney Springs Hotels:
http://disneyspringshotels.com/