Personally, I usually just take the plaques. Don't have to worry about sizes that way.
Course after seening what they are bringing on e-bay, may have to reconsider if I'm ever lucky enough to get another one.
Amyhow back to the topic, I would opt for the 10K if I was considering upgrading. Mainly because of durability.
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~~~SrK - Have balls, will travel
Old bowlers never die, we just don't score as often