I have a 2.0 TDCI 6 speed with a solid Valeo conversion. It was quite harsh at first under 2000rpm but seems to have bedded in a bit now (I have done 20k since fitting).
When I priced the kits up there was very little diffrence in the solid or DMF so unless you will keep the car long enough to be replacing the next clutch you might aswell stick with a DMF. Mine is a mini cab and I think the car is good for 300k so I will need 1 more clutch to get to that milage. I have previously run a TDDI to 280k with just 1 genuine ford clutch and flywheel kit and there was nothing wrong with that clutch at 280k and it was fitted at 140k but it all depends how you drive.