I'm curious what was so much better about the V20? I had that device a while back and I loved it, but the V60 is faster, better screen by a VERY wide margin, better camera, better battery, etc. Not arguing, just curious what you liked better?
The V20 had a metal body, removable battery, IR blaster, bezels (especially the chin; I'm now constantly typing one row above where I want), secondary screen functions, Q-slide floating apps, no annoying notch blocking out the main display, no gimmicky 64MP sensor (pixel binning is good, but full 64MP resolution is junk) and the app had 30 second maximum exposure in manual mode regardless of the lens used (the V60 is 30s wide angle, 20s main).
When it comes to the screen, it's more nuanced. I prefer an LCD screen over OLED any day due to the risk of OLED burn in. I do admit the V20 had an image retention problem on its LCD screen, but that was something defective in their particular design. Other phones didn't have that problem, including other LG phones. Outside that retention issue, the V20's display was still very nice.
Performance wise, the V60 has faster raw processing power, but the V20 held its own quite well. Everything ran smooth, including gaming. Raw speed isn't everything.
I also loved the quality of the microphones in the V20, but I've yet to put the V60 to the test. My favorite video I recorded on the V20 was a jet dragster race from right next to the starting line. The V20 handled that amount of sound like a champ. I'll be going to another race this weekend, with the same access, and I'll be doing the same with the V60. I expect it to perform just as well, if not better, in that regard.