Ok so the real question is OLED or 2.0.
I owned an OLED in the past and fucking loved the screen but better ergonomics is a really big deal to me too. Hmm...
I have an OLED since launch and absolutely loved it to a point where I was almost paranoid to buy a second OLED as a spare in case mine breaks just to avoid having to buy a Vita 2000.
But during the recent sale on amazon I bought a Vita 2000, just to see for myself how big the difference is since there are a lot of positive comments about it on GAF and maybe return it in case I don't like it.
The main difference between the screens are the black levels. On the OLED blacks are glorious. Actual black instead of the usual LCD very dark grey. It's especially noticeable on startup screens with black screen+ developer logo. That's were the 2000 is a significant downgrade. During normal gameplay it's depending on how dark a scene is not that noticeable though. (and OLED has the black spots in the black issue)
But one thing, that I didn't noticed before a direct comparison was how blue whites are on the OLED. The 2000 shows clean whites that are actual white, on the OLED everything from white to light greys has a slight blue in it.
Reds seem a bit too strong as well. Overall I would say, the OLED can look more colourful the 2000 has more natural colours.
I tested though all my games with both Vitas side by side and fond that in some cases (e.g. Lumines) I prefer the colours of the OLED in others (Persona 4 Golden) the 2000 looks superior to me, but in the majority of games the difference was negligibly small that either is fine.
Both are fine screens with advantages and disadvantages. But the 2000 is a lot more comfortable to hold. The result for me was, that I'm now using the Vita 2000 as my main device.