You need to be mindful of the quality with both brands.
Dell XPS models are notorious for coil wine and display issues. Unlike the X1, the XPS models don't have USB-A ports.
The Lenovo X1 has the display panel lottery and fit-and-finish problems such as misaligned keys, seam gaps, and case material differences, which is probably attributed to multiple suppliers. Depending on the type of display panel, there could be four different suppliers (best to worst): Innolux, LG-Philips, AU Optronics, and BOE.
Dell XPS models are notorious for coil wine and display issues. Unlike the X1, the XPS models don't have USB-A ports.
The Lenovo X1 has the display panel lottery and fit-and-finish problems such as misaligned keys, seam gaps, and case material differences, which is probably attributed to multiple suppliers. Depending on the type of display panel, there could be four different suppliers (best to worst): Innolux, LG-Philips, AU Optronics, and BOE.