I had a series of two XPS laptops in my last corporate job, finishing two years ago. My uncle has also had one of them that passed on to me when he died.

I can't speak for the other series you mention, but the XPS series is complete garbage and should be avoided at all costs. Three for three laptops, all in theory well specced, that were all horribly flawed in various ways (WiFi flakiness, constant driver issues, crappy trackpads, mediocre keyboards), does not speak well of that model line.