@Normandy T430s is generally considered OK. 6-row keyboard is meh, but it's still a decent keyboard, and it has proper trackpoint and trackpad buttons.
You should in general avoid ones that have Nvidia graphics. If possible, try to find the 1600x900 screen, but that might put it out of your price range. None of the screens in Thinkpads of this era were great.
Memory is user-upgradable to 16GB and SSD is easy to add later if you get a model with less ram or an HDD now.
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