I've been offered a used 744T, which has spend much of its time in a lab, but also some work in the field. The price is about $500 more then a new 702. All of my field work has been two channels only up until now, but the extra two seem tempting (I know they don't have the mic pre's on channels 3 & 4).
I don't know if these units gets too worn out with some years on its back, so I figured I wanted to ask here about what to do. What would you do?
I guess the Sound Devices recorders is the way to go if one would like top notch recordings.

(source: sounddevices.com)