Upgrading help

I've had my W520 since 2016, and it's been a powerhouse of a laptop. As expected, the battery life is quite poor, lasting only about 1 to 1.5 hours, which isn't a deal-breaker for me. However, I've decided to pass on this laptop to my father and purchase a "better" one for myself. I'm interested in something more modern, like a Yoga I want to try the touch function on linux, but I'm not sure where to start. Do you have any suggestions? I'm looking for a lighter option, maybe an ultrabook, but I'm feeling lost. Any help would be greatly appreciated.

Here are the specs:
CPU: Intel i7-2720QM
GPU: NVIDIA QUADRO 1000M
8GB RAM