I just thought about this, and I don't think anyone really talks about HUDs, and since it's such an important subject, I'd thought that I'd ask about which ones you guys like to use. I personally use the minimized F3 HUD, but I'm certain others are such pros that they use no HUD!
For me, it depends on what I am driving and how much experience I have. I mostly drive with the minimized HUD as I use an Xbox controller so I don't need the levers on the full HUD but it still gives me the information I need to run on time. I think that the only loco I run exclusively with no HUD is the ICE 2 as it has really nice in-cab signalling and speed limits.
My own custom F3 hud, the aws warning is a sunflower (Not the actual flower but the train aws one) as opposed to the black and yellow square and there are other subtle differences like a more transparent circle where the speed and track speed are displayed. I tend to swap routes a lot so haven't learnt enough to go completely hud free.
There are some to download on UKTS https://www.uktrainsim.com/filelib-info.php?form_fileid=32172 https://www.uktrainsim.com/filelib-info.php?form_fileid=39733 I normally use the F3 Hud to drive in TS2xx as it gives me up coming signal positions and speed changes
By editing the 2013_DrivingInt_steam_Extra.tga image file located in RailWorks/data/textures/frontend AWS off. AWS on.
F3 hud. And then all the necesary controls on a second screen (via ts-telemetry) so i can get the full scenery view on the main screen.
I prefer F3 HUD when driving trains. On the 2nd Monitor: I use TS-MFD, ThirdRails Map Tool and also TS-Telemetry (See post #8)
Map tools are useful, but I never understood the point of having speed info etc on a second monitor if you use the HUD