I upgraded from a 2017 13" MacBook Pro touch bar to 2018 15" MacBook Pro touch bar, and noticed a huge improvement.
- 6 cores (12 threads) was absolutely noticeable
- NVme disk performance is much faster
- 2nd generation butterfly keyboard is much improved
- Speakers are way louder, bassy, and crisp
- 15" screen is much better in terms of real-estate than 13"
You actually have the 3rd gen butterfly keyboard. The first gen was only on the 12“ MacBook series. And that one was really bad (have zero feedback). The 2nd gen on the 2017 is bearable, but doesn’t seem to be long term reliable