> deep blacks

I have never agreed with the supposition that CRTs have deep blacks. The "black" is clearly gray and it was always very noticeable to me when watching CRTs in a lit room. This is one of the things that appealed to me about LCDs in the first place.

In a pitch black room maybe CRTs have better blacks than LCDs (but even then there's CRT glow!), but LCDs have better blacks in a lit room, which is a far more likely scenario for me. Consequently since the beginning of LCD use I've always thought of them as being more vibrant with better contrast.

One thing you can do on a CRT that is difficult/impossible to simulate on an LCD is proper vector graphics. Vectrex games have a really cool glow to the lines as do arcade cabinets (Star Wars / Asteroids / Battle Zone). I wonder how closely OLEDs can mimick that.