The 949/X5 is excellent. Do not know how it compares to the other scanner you are considering.
The Hasselblad is very, very fast, easy to use, requires no special prep, keeps the film flat, provides a true 4.9 D-Max to see into the shadows and still hold the highlights, can batch scan and offers production attachments to do higher volume workflows. It is built like a battle tank and takes up very little desk-top space due to its upright design.
The 949/X5 is different from other scanners like the Imacon 646 or 848 or Nikons in that it uses a special diffused light source that produces results similar in look and feel to an analog darkroom enlarger.
Here's a quick example of a difficult lighting scenaro that medium format digital back would tend to struggle with ... a higher contrast film shot in back-lit conditions with strong dappled light striking the subjects who are wearing some black, black hair, velvet black dog muzzle, and shiny black purse.
The 949 sees into the inky shadows yet holds the highlights effortlessly
Hasselblad H2F with a HC 50mm lens shooting Tri-X: