I have had HopSlam, Burning River and Yakima. HopSlam and Burning River on draft and Yakima from the bottle.
Burning River was a disappointment as BeerAdvocate seemed to suggest it was hoppier than it is.
HopSlam is grapefruit hop dominated which isn't my favorite hop flavor and thus it isn't my favorite DIPA and a bit overrated, IMO, but still an excellent beer.
Yakima is wonderful. It is perfect for my tastes as it has a darker malt than most DIPA and is dominated by Victory hops. Enjoy.