My other laptop is an HP Elitebook 1040 with a 14" screen. I'm also happy with that and it's what I travel with the most. It's a bit thinner and lighter than the XPS but less than an inch narrower. Compared to that size difference, the screen of the XPS feels a lot larger.
Something worth noting if you're travelling a lot: the power brick for the HP is smaller and lighter than the Dell's. Considering that you'll have to carry that with you, it should be part of the weight calculation.
Something worth noting if you're travelling a lot: the power brick for the HP is smaller and lighter than the Dell's. Considering that you'll have to carry that with you, it should be part of the weight calculation.