10 doors hung and 5 to go. So far I'm very happy with them. Construction is a chipboard core with a 35mm lip on each side and top and bottom, leaving plenty of room for trimming to size. The veneers are mainly book matched which is a nice touch, and the thickness of the lipping means that there is always plenty of "real wood" to screw into for hinge attachment etc. The grooves between the veneered panels are cut into solid oak strips set in to the core, so there is no hint of a composite material on the outside of the door. I've lightly cleaned up each one with my ROS, degreased with a wipe of meths and then given 2 coats of Osmo door oil. Total cost is £150 per door including all door furniture and 3 ball bearing hinges per door.
This is the first time I've fitted composite doors so I have nothing to compare them with, but I would use again.
Deanta Doors Ely for the solid doors, and
Deanta Kerry for the glazed ones, bought through
"Doors of Distinction" in Sidmouth, who undercut their own website prices.