Coil pack genuine Vs aftermarket mx5 parts

Technical Area Engine, Transmission, Exhaust etc
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  1. My model of MX-5 is: 2010 nc
  2. I’m based near: Nottingham
  3. I’m looking for technical help or recommendations on: coil pack

Hi,
I have a 2010 MK3 MX-5.
It has been miss-firing under idle. I think it’s the coil pack. When it started happening I put some e5 fuel in and injector cleaner. I have then cleaned the spark plugs and compression tested it. The only thing that made a difference was cleaning the coil pack.

Do I’m looking at replacing them. MX-5 parts have 2 options. Genuine or aftermarket and these are 2 very different price points one being about £20 and one £90. I want to know if anyone else has experience of using the cheaper one as there is a big price difference. If I get the £20 option I can replace all 4. But I don’t know what the quality is like.

Any help is appreciated.

Thanks

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Not used these , but I’m going too at some point
5yrs warranty sways it for me.

Edit…From Bofi racing

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Be aware that on some early NCs, the coil pack wires would break internally near the connector and need to be replaced, which is fairly easy DIY.

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