The same one that will be obsolete tomorrow! Seriously!! Are you polling or are you looking for advice on a really good computer for your personal use? I hope it is the latter. Determine your needs based on how you will be using the computer, then ask; "What is the best computer to do xxxx?"
Check Consumer Reports; that's where I always check if I need a new computer, monitor, etc. They don't sell advertisements, so no company is paying them to say which is best. They also show average prices, and what aspects of the device is better or worse.