The quality between a CRT and a modern monitor is immense. CRT is the only choice here. Just try Diablo II on a CRT and a LCD, you will fall in love with the CRT one.

i wouldn't go as far as that as much as i would say that it masks the pixelation of older games and has a certain look to it that makes me wonder whether they intentionally designed it for those monitors.

Many games were designed for older monitors for sure (this is one more argument for using retro shaders here on GOG.com). You can read this interesting article about technical issues arising when taking screenshots of retro games.

There are problems with rendering correct colors, dithering, transparency, scanlines, etc.

I should have bought 3 Sony Trinitrons when they were still manufactured :-(

I've added the section with USEFUL LINKS to this thread's first post. Maybe I will update it from time to time.

Happy shading everyone! :)

Suggest me a good CRT TV for old console gaming =)

This article should answer all your questions: In Search of Scanlines: The Best CRT Monitor for Retro Gaming

I've discovered that if you're a Mac user there is actually an official way to use retro shaders/filters with GOG.com games already!

You need a game, for example free Tyrian 2000, that is launched through Boxer (a DOSBox front end). When starting the game you choose from the Mac menu bar at top View -> Rendering Style -> Retro (you can also try out the one called Smoove), and you're good to go! See the screenshot I've attached to this post as a proof that it works.

If you want to further tweak how this retro shader looks, right-click on the [App Name].app file and choose Show Package Contents, then go to Contents -> Resources -> Shaders, next you open the files up with your text editor. Here are instructions how to edit this retro shader.

For those that aren't familiar with it, Retroarch is awesome for this stuff and it supports Dosbox as well.

Now, it'd nice if GOG.com added support for retro shaders in DOSBox for Windows (as for Mac it is already there), and for ScummVM.

There was some work done on shaders for ScummVM, but I don't know whether retro shaders are compatible with it.