+1 for Lenovo 20GB RAM vs. 8 GB for Dell 512 GB SSD vs. 256 GB for Dell Backlit Keyboard and Fingerprint Reader For Dell the only + is the better Display panel WVA vs. TN for Lenovo
For Laptop According to your Usage you can go for any manufacturer but be sure its dos based & no any OS is preinstalled. Secondly Manufacturer had published OLD OS drivers for the same Hardware cuz if you want to go to previous OS by M$ then it will be good to go for you etc etc etc lots of suggestiosn might be there & you only have to decide which side to go or which to not but dont get confused.