If you've stuck your hands in them both and they both work for you and you still can't decide, get the cheaper one.

Thanks but I am ordering online so I am not sure...

I would order a sample of each and see. I got a sample of the pull I wanted to use and it was a good decision. The pull was 3 3/4" in width, but when we got the sample, the height away from the cabinet surface was not enough for us to put our hands in it easily. We chose a different pull to use instead. Also, you can see how the pull actually looks and feels. I decided against a number of pulls because they did not feel good when I actually had them in my hands.

As for which size, depends on the look you want or what your budget can handle. You may decide to use some of both.

A lot of the online suppliers have sample programs, so you might check that out before ordering everything.

Here's an article about choosing cabinet hardware:

Here is a link that might be useful: Hardware article

Yup, samples. It's a pain but it could save you from a disaster (especially if we're talking about drilling holes). Many places will allow you to return samples at no cost when you're purchasing a load of hardware.

Are these for upper cabinets or lower cabinets or both? How wide are the drawers? The choice is a mater of proportion to your drawer width which you haven't provided. What about using both pulls, with the wider one being for the wider drawers and the narrower one for the smaller drawers.