To answer the main question,
If you're the type who don't regularly upgrade your phone, don't.
Spec wise it's superb, Removable battery? Useful 2nd screen? Hell yea!
But the big problem is, the screen retention.
I bought this last November. On the 5th month of using this, I noticed screen retention. I thought it's no biggie cos it usually goes away by itself. Then on the 6th month, it got worse. Screen retention was very noticable. So I decided to go to the service centre and they replaced the screen under warranty. I was even able to convince the tech guy to replace the main board thinking it could be the reason why I got that retention. So that was just last month. After the replacement, after a month. Screen retention is back again! I love the v20 and if ever note 7 didn't have issues, I'd still choose this phone. But I lost my confidence in this phone already. Screen retention?! Which I never had with Samsung. I thought I was just unlucky the first time. But twice?! Err..
Just gonna wait for other future flagships. To think this issue occured on the g5, v10 and now v20 and g6.
I don't know with y'all but bye LG for me.
Yeah this is subjective. And just my opinion