odyssey extreme compared to odyssey mono's

I am thinking about upgrading from the odyssey mono's to the extreme. Is the upgrade worth the cost?
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You can find some discussion of this at audiocircle.com under the manufacturer's discussion site. There are positive reviews depending on your system needs.
i talked with klaus at he2003 and he described to me what he would do to modify my monoblocks to the extreme. I am on the list to get them modified in august. i was impressed.
Thanks guys I appreciate your response. I'm going to call Klaus.