Raised handles shortens the range of motion, makes if more of like pulling from a block or rack. Low handles is more range of motion and more like a convention DL starting point. High handles you can pull more, and personally I feel more leg drive from the quads than hips. Use both.
Get the one with raised, as I was informed to my own embarrassment here, you can flip it upside down if you get the one with high handles and it is now a low handle.
I got mine on Amazon for 100 bucks. Used it for 400 lb+ loads with no problem. Hope that helps.