First off, what
effect are you trying to achieve. If your just trying to backlight the doors to give them a
bit of lights, I would go with the fresnels. Their easy, and you can
zoom them which is always nice.
If your trying to go for a harsh, cool feeling, I would choose a single
cell cyc light. In my experience, most
cyc lights have cooler color-temp lamps in them (though, of course, this is a not a rule, lots of different lamps with different color temps out there).
If your having problems with
spill, use fresnels and
zoom them in. You can also get barn-doors for them which are moderately effective at cutting off light. If your using the
cyc lights, you can get black-wrap and make your own barn doors.