As favortes go that are these since not every brand has the livery you'd want, I have five favoritesfor diecast models though
01. JC Wings
02. Gemini Jets 200
03. Inflight 200 and others:
03a. J-Fox Models Taiwan
03b. ARD Models UK
03c. Aviation 200
The last three all use molds by Inflight 200 btw, just to avoid confusion there
Those five are most welcome for me even tho JC Wings will always be my number one favorite the jeweled trailing edge landing lights the coloration of the paints & Decals it's most accurate to what I have seen when it comes to specific B747 liveries, IF 200 has this with classics , even I wish that JC Wings & Gemini Jets 200 would do more classics like Inflight including those that use IF200's molds alike.
If that was the case then only JC Wings & Gemini Jets 200 would be my ultimate choices.
For PVC it's these two
01. Hogan Wings
02. Herpa Wings
These two do both considerably ell, when it comes to high detailed PVC models.
In the end seven great brands with many varieties that too remains important so you as buyer have something to choose from.
Here an other topic that I ran in to during my search, it has some useful info in it as well