Well, my latest shot in Corona Australis was taken with a Zenithstar 105, the model before the 110. My experience is limited, but the 105 seems to have great resolution and good field flatness, way better than my ED80. The 110 is supposed to be superior to the 105. I've been told the Zenitstar uses a combination of FPL53 and FPL51 elements but I can't verify that.
I still lust after an FLT132.
Cheers,
Rob