charlest: If there is anyone who is a stickler for accuracy, it's you. You can be relentless when you have a point to drive home when you believe you know something. And more often than not, you're right.
The same principle here. I have both Supernovas and have a very good feel for what they are, and what they're not. The XP is not and was never intended to be a skid/snap ball. On the other hand, the HRG was intended to be a skid/snap ball -- an alternative to the rolly (LRG) Pearl Uranium.
Therefore, your statement "The XP seems to be what the HRG was intended to be" is a false premise. That's the only thing I was trying to clear up. This has nothing to do with getting carried away or defending Lane#1.
If we've cleared this up, MY OPINION is that you're generally in uncharted waters when you get higher RG pearl equipment (from any manufacturer). Because they're so sensitive to oil and friction, you're sometimes rolling the dice based on drill, the exact OOB surface you happened to get, style, and the house you bowl in.
For example, when I recently purchased my XP, I picked up a G-Force Evolution along with it. The Evo is a skip/flip pearl along the lines the HRG. To make a long story short, my driller made a mistake on the drill. I wanted it stacked (pin just slightly above and next to ring), but the pin ended up about 1.5" higher than planned. On paper, this was a disaster -- high pin on a high RG ball with big backend. Right away, my driller offered to replace it without me even throwing a shot with it.
Anyway, to my surprise, the ball gets length but not too much, and makes a pronounced turn (much more than the XP on the same medium conditions). I didn't have to do anything to the cover. Who knew? A ball I thought was ruined does what it's supposed to with drill that shouldn't have been.
Anyway, chalk your situation with HRG up to experience. Unknown factors that result in mismatches happen to all of us.
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"Sometimes, the best move is the one we don't make"