Thanks everyone for your thoughtful replies. I'm sure they are both excellent machines with great service, but in the end, I went with the Gamma 602FC, and I upgraded to the top-of-the-line Gamma clamps (for just the price difference between the two types of clamps). The machine is beautiful! The Gamma customer service is wonderful!
2 Yonex VCore 97 Tour 310, TW leather grips, 6 inches, 1/4 in. lead, 3 and 9 o'clock, RPM Blast 16 26/25 kgs., Yonex dampeners, Wilson Pro overgrips.