I need a work laptop (new). Help me out

[Irving]

It's time to get a new laptop. I don't know enough about computers to shop for myself, so I'm once again appealing to the hive mind. Please help me out.

- I'm done buying used computers. They do okay, but don't last long before they start slowing down.
- I currently have a Lenovo Thinkpad W520. It's fine for everything I do, but when I use Xactimate it slows down so much that I'm probably losing an hour or more a day in lag time.
Here are the system requirements for what I need to run. Probably isn't that much, but the rest of my computer about shuts down when I'm running it: https://www.xactware.com/en-us/solut...-requirements/
- EDIT: Battery life! My laptop now only lasts about an hour, definitely under two, while it is running off of the battery. If I can get something that'd give me four hours I'd be happy, six or more and I'd be ecstatic.
- I carry this out in the field with me so it needs to be durable, and if possible I'd like it to be reasonably light.
- I want a 10-key.
- Not interested in a Mac.
- I'm only conceptually interested in Linux. I'm not sure if most of my stuff will run on Linux, and even if it can, I quite literally do not have the time to find out how to do it.
- I hesitate to even put cost on the list. I want something great, but I don't want to pay a million dollars only to have it run like garbage in two years. If I'm going to spend the money, I'd like something that has some longevity to it. I'm only referring to usability. I care zero about having the latest-greatest-as soon as it comes out. I just want it to work well for as long as I can.

Please help me out with some options of what I should look at. Thank you.