The t440p can be upgraded to a decent daily driver (4 core CPU, 16GB memory) running Linux with the advantage it's cheap and you can run Coreboot which has the option to disable Intel ME. (Intel's backdoor). It's over a decade old now but as far as I know is the latest model which allows this. All CPUs after this date are backdoored (AMD has PSP) Now, it's not perfect as it's a tank so not good for carrying around. It also guzzles power especially if you upgrade to the 4 core CPU. And you will need to fully open the case to get to the motherboard chips to flash Coreboot which is a pain, and also, you will need to use binary blobs for a few things (wireless etc) so it's not 100% FOSS. If you DDG or YouTube search you should be able to find out more info as it has a bit of a cult following. This is also a pre Lenevo model so it's ThinkPads how they used to be back in the good old days--built to last.