Anything but Lenovo.
Lenovo makes good products, but the company just has a
very long and most importantly,
recurring pattern of embedding spyware and even malware in their products. Google
Lenovo malware to see for yourself. With such a history of repeating offenses even after execs promise to stop, I can only guess there is some Chinese government influences going on that maybe even Lenovo cannot control. But as the #1 or #2 (depending on source) market share holder in the world, it is a big deal.
I personally have never liked notebooks and only used them out of necessity when mobility was required. I much prefer the full size keyboard and mouse, two 24" widescreen monitors, and full surround sound speakers provided by my PC.
My current notebook is a
Toshiba Satellite A505-S6009 I purchased way back in February 2010. It came with 64-bit W7 Pro and now has 64-bit W10 Pro. It has been problem free since day one.
My only complaint is I barely get 2 hours of battery run time. HOWEVER, when brand new, and as noted in the specs, it only got 2 hours, 35 minutes. So to only lose 35-40 minutes from an 8 year old battery, I really don't have anything to complain about. I would recommend and buy Toshiba again but they announced in 2016 they would stop making consumer laptops.
If I had to buy a new notebook today, I would look at Dell first. But I would stay away from their entry level model. Actually, regardless the brand, I recommend staying away from the entry level models. Invest (read: spend more money) on higher end models if you expect the notebook to last beyond the warranty period. Of course, buying higher end does not guarantee longer service, but it improves your chances.