Don't buy a new Thinkpad. I just wanted the trackpoint because I fucking hate touchpads but they use these elantech ones now that suck to use on Linux (stuttering, imprecision, etc). The bottom panel is made out of cheap plastic and held on with plastic clips and you can only remove it so many times before a clip breaks and you can't put it back on. The CPU and some of the RAM is soldered, but I suppose that's to be expected on a modern machine unfortunately.
Basically, I bought a chinesium laptop for $1000 and am regretting it deeply a few years later.