Nikon 50mm f/1.8D Nikkor AF Lens vs 35mm f1.8 G Af-S DX?

Which one is "better"? I have a Nikon D5100 I know that the one can't autofocus but that really doesn't matter to me that much. But I do like all of the markings on it. Is it just down to a personal preference by now?

I assume you gave looked at reputable sites for reviews on both.
The main difference is that the 35mm is only compatible with the DX range of cameras. If you decide to change to an FX this lens will not work with those cameras.
You say autofocus is not important but at those times when you have a shot that you want to capture quickly autofocus is the way to go.
Booth get equally good reviews - so its mainly personal preference if these two things don't bother you at all.

Both FX and DX lenses will work perfectly fine on your D5100.
If you want auto focus, you need to buy AF-S Nikkor lenses
If you need a medium telephoto lens for shooting portraits, you need the AF-S Nikkor 50 mm f/1.8 lens. If you want a focal length closer to what used to be called a "normal" lens.
The focal length you choose needs to be based upon your needs as a photographer. Chose your lens based upon performance, NOT cost.

It's not a matter of being better. It's a matter of usage. They have different focal lengths. They have different uses.
The 50mm on your camera would be a short telephoto. That slight magnification is very good for portraits. F/1.8 would even make it ideal for closeups if you don't mind being close to your subject.
35mm will be a standard or normal lens with your camera and is equal to the angle of view of your eyes. It will be good for taking people, pets, candids and most anything in general.
Yes, it will go down to personal preference. If you have no idea, get the 35mm. It should prove to be more useful to you.
http://keerok-photography.blogspot.com/2011/05/lenses-so-many-of-them-there-is-no-best.html
- Nikon 35mm f/1.8G AF-S DX Lens vs Nikon 50mm f/1.8D AF Nikkor Lens for Nikon D90?
- Why is the Nikkor 35mm f/1.4 way, way bigger than the Nikkor 35mm f/1.8 (DX)?
- Why is the Nikkor 35mm f/1.4 Way more expensive than the Nikkor 35mm f/1.8?
- Why is the nikkor 35mm f/2D more expensive than the nikkor 35mm f/1.8G?
- Which would you prefer? The AF-S DX NIKKOR 35mm f/1.8G or the Nikon 50mm f/1.8D AF Nikkor?