I own a T430 myself and have enjoyed using it for a couple of years already. Very durable, reliable and upgradable - plus its just fun to use. I removed the CD Rom and put an SSD in its place; upgraded to 8GB Ram; got a GTX 1050ti as an external GPU running and connected it together with an external monitor, keyboard and mouse to a docking station. That way I can use it on the go and then just put it on the docking station to have all the peripherals connected/disconnected easily. I could also update the processor but it would require spending more than 100€ on the chip and an improved cooling which I dont think justifies a minor boost in performance.