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Cipherjuris,
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I have heard both the UNIverse and XV1-s in my system on the same arm on the same weekend with the same music. I clearly prefer the UNIverse to the XV-1s with no slight to the XV-1s (a great cartridge and great value).
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The XV-1s is a bit more dynamic and more punchy in the bass, but for me the UNIverse is clearly preferable.
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The UNIverse does it all and is heavenly musical. The only cartridge I would prefer over the UNIverse would be the Lyra / Olympus ($ 10,000.00), but I have not heard the Koetsu Tiger Eye. I greatly prefer the UNIverse to the Koetsu Rosewood Signature Platinum (which I own).
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Let us know which way you go and how it turns out for you.
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Rgds,
Larry
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