I picked up the zte MF60 last week at modem3g.com. I previously had the MF30, but struggled with signal strength due to my location (5kms outside Torquay, Vic). Previous to that I had the Virgin E5832 and could get no signal in Torquay.
I got the MF60 because of the external antenna option (TS9 type), which the MF30 & E5832 didn’t have. I am getting a stronger signal with the MF60 with NO external antenna, than I did with the MF30 (normally often only 2-3 bars of UMTS at my home).