I have always had good luck with Dell refurbished laptops and did my employer. You can go on chat with them, tell them what you want to do with your computer and they will come up with a reasonable deal. You get the full factory warranty and support.
I can say the only non Dell computer we've purchased was a Lenovo from Best Buy. Lenovo had to buy it back at full price plus sales tax six months out of warranty when the hinge failed. Even though we got the refund it took three months of brain damage working with Lenovo's horrible tech support.