I've ordered a ZWO120MC direct from ZWoptical, time to get serious with this bloody obsession. I hope there aren't too many clouds packed in the box.
Price was $298 US + $30 US postage and they've got PayPal setup. Between it's sensitivity and guiding capability it's worth the step up and I'll be very interested in modding a cooling system to it.
I'll let you know when the clouds arrive.