I pondered the same question before purchasing my GTC52-2.  I know there are plenty of KKII supporters out there, but I couldn't be happier with my Woods.  The 52" also covers my tracks better than a 48".  As previously stated, this tiller kicked out some mean rocks without hesitation.  Very well made, as is other Woods products.  I honestly don't think you could go wrong with either, but I would consider dealer support in making a decision.  I paid $1895.00 for my tiller, so $1599.00 including set up from the dealer sounds pretty good. 
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