Can't say I've ever knowingly driven a car that has had a DM replaced with a solid flywheel, can you feel any difference or vibrations?
If there is no benefit to having a DM why did manufacturers fit them in the first place? I mean, you can understand Valeo saying fit solid and Luk saying fit DM but is there any benefit or is this just another example of modern technology that hasn't really been developed and tested properly before being released to the public who then have to pay for the mistakes.