I have to admit, 4 generations in, 1.8x is decent but slightly disappointing all the same. I'd really like to justify upgrading, but a $4k+ spend needs to hit

I have to admit, 4 generations in, 1.8x is decent but slightly disappointing all the same. I'd really like to justify upgrading, but a $4k+ spend needs to hit greater than 2x for me to feel it's justified. 1.8x is still "kind of the same" as what I have already.