Installed these on my 2017 MX5 RF that spends most of its life on track. I have the 88 durometer bushings. Bottom line - I really like them and recommend them to anyone tracking their car. I get way more feedback on track from the engine. Yes it has more NVH but in a good way. When driving to the track in 6th gear, I don't even notice the difference. At stoplight idle, I'll notice it in the mirrors a bit but it isn't the teeth-chattering experience many say it will be.
Another benefit is the durability. The OEM mounts are fragile and the top mount will sometimes break in an aggressive off. I don't have to worry about that anymore. Installation isn't terribly difficult. Hardest part is accessing some of the nuts but with extensions, wobbles and jointed socket extensions, it is doable at home.
Stop wondering if you should and just get them!!