Yes, Lenovo thinkpad line is very good. I am both Dell and Lenovo certified. For Lenovo get the Premier 3 year warranty service. This will allow them to send parts and tech to your location to repair if anything goes wrong. For both Dell and Lenovo if you need a hard drive sent to you have them re-image it before it is sent out. Also if spending big money on a Laptop make sure warranty includes accident protection.
Premium warranty is also good. Never get standard. Standard warranty is long wait times and you talk to someone in India. Premier and Premium you get a senior tech from American that is trained to solve your issues.
If you are going to be doing business on your laptop, Dell and Lenovo business laptops are the best.