I would recommend this glass screen protector. Feels really nice with regards to touch and the S Pen. Super easy install.

https://www.amazon.com/LK-Protector-Coverage-Tempered-Replacement/dp/B07F9QLX2L/ref=sr_1_4?ie=UTF8&qid=1540257092&sr=8-4&keywords=note+9+glass+lk