so im debating between these two units. just sold off my 2yr old avic w/my old whip and picked up a 2006 fusion 5spd. gotta have bluetooth to chat..deff hooking up my ipod. Iv already bought an aca200w backup cam for $60 and the SWI-PS for $40. I can get a refurb f90bt (which ill flash to 3.0) for $350 or a new z110bt for $900..is it worth the $550 difference to get the z110bt? or even the $350 if i can pull off there rebate

also if i do get the f90bt and later want to upgrade to the z110bt would the old wiring be compatible?

also my understanding is with the 3.0FW there is no lag with the steering wheel controls? (the swi-ps is ver 1.68)

The advantages of the 110 over any F or X series are like night and day. The F/X series is still full of unpredictable problems as indicated by many people on this forum. The power harnesses between the units are apparently interchangeable but the AV harnesses are not and one of the bypass wires is located on the AV harness. There is a slight lag with the PAC modules but it is negligible. If you want predicable, trouble free operation that you can always rely on, go with the Z.

I was debating the same thing, but where did you find a refurb f90bt for $350?