Lenovo T or X series if it's going to be your main computer. If it's a secondary, I've had decent luck with the smaller Lenovo Yoga series.
My office used to run Dell exclusively...and while Dell's on-site tech support guys are nice and professional, we were seeing them constantly, whether it be for the server or laptops. Switched over to Lenovo ~8 or so years ago and it's been smooth sailing.