lasik wavefront technology

Regarding LASIK surgery, is Custom Wavefront Lasik worth $800 more than Flying Spot Technology?
If someone could provide an educated opinion on the topic I’d appreciate it. My LASIK surgeon recommended either the Bausch & Lomb 217Z (flying spot) or the Bausch & Lomb Zyoptix (custom wavefront). When I search for articles on the web, all I get are articles promoting one or the other, but I cant find a comparison. It seems like the Zypotix comes higher recommended but is it worth an extra $800? Or is the improvement between custom wavefront over flying spot worth it?
it totally depends on your Rx and pupil size.
Rx over say -4.50 and/or large pupil size: need the expensive one
Rx under about -4.00 *AND* small or average pupil size: cheaper one is likely fine
wavefront LASIK Technology
