What's your use case? What carb is ideal depends on the circumstance you're using it in, and spending extra for HBCD may or may not be worth it depending on the level of exertion and duration of exercise.
The overly vague specification of Karbolyn has never really appealed much to me, homopolysaccharides are a pretty broad category, and could range anywhere from significantly more useful than plain maltodextrin to barely more useful depending on manufacturing process.
But nitpicking aside, the ingredient does mix well and anecdotally lives up to what you'd expect from a pretty high osmolarity carb, not as high as HBCD mind you, which is where you get into intensity/duration of exercise possibly justifying the more expensive HBCD.