Looking to possibly upgrade the brakes on my 2014 5.0 f type S. Any recommendations/experience of slotted disc conversions? I purchased new sure stop ceramic pads but have yet to install. Figured I’d look at better discs too while I’m at it.

 

Back in 2015 I fitted Hart brand slotted and drilled brake rotors to my 2010 XFR, then I transferred them to my F-Type in 2016/17 (exact same 380 mm front and 376 mm rear rotors).
See here for an example of a current Hart listing for the 380 mm front rotors and pads: https://www.ebay.com/itm/11482477821...YAAOSwDqlgrTms
After all these years the rotors are still going strong, looking good, performing great and are barely even half worn.
Be careful of kits advertised as including "ceramic" pads as the Hart kit I purchased back in 2015 advertised ceramic pads but they turned out to be the exact same Centric PosiQuiet semi-metallic pads I already had.
If you already have the correct ceramic pads that shouldn't be a problem so just look for sets of rotors only.
Also don't restrict your searching to F-Type rotors as the 380 mm front and 376 mm rear rotors are identical across a wide range of Jags including XF Supercharged, XFR, XJR and XKR.
Be aware that although the rotors and the front pads are the same across that Jag range the rear pads are not always the same so if looking for rear pads you need to specify F-Type.

 

You can check out STOP TECH brake discs. I have them on my car, slotted & drilled version.