I use Gillette Track II
disposable blades for sensitive skin (with no pivot).
I shave down, then up.
I usually wait 3 or 4 days between shaves (I'm a Truck Driver - so I can), that way my wiskers are much softer & I don't get any razor burn.
If I'm forced to shave with 1 or 2 days growth, I end up looking like someone went at my neck with a blow torch!
Once, when I was out of shaving cream, I tried using shampoo, and it worked great!