Oh, it's worth every penny! But people should just be aware of the noise level.
Another thing of note that I didn't realize until a few days ago: my car (and all the associated low-level noises with it) puts both of my kids to sleep on the 30-minute drive home after day care every night. What used to be a lot of talking/giggling/yelling is now a yawn and snoring. Yeah, it could be that they are tired from school, but the only thing that has changed in the last month is the tranny mounts, and with most of my driving in 4th gear, I think the low-level whine makes them both sleepy.
Something for those dads to think about if their drives home with the kids is rather... distracting.