IMHO, if you have a well spec'd combo, there's no need to pay so much extra money for a "premium" WHD(Hensley/ProPride)
there are thousands of good combos out there, safely and effeciately using great WDH's like Equal-i-zer, Reese Dual Cam, Blue Ox, Andersen and so on.
to me, those premium WDHs are worth the money, if your TV has a short wheelbase or is lighter weight.
like Can Am setups.
for a solid truck/trailer combo, there's no need for spending all that dough.
BUT if you've got the money, then by all means get one. but you don't NEED to.