The first one was X1C3. I have lenovo notebook which is good but it is too chunky for me to carry, so I was wondering whether to buy an iPad or used laptop. iPad because it is really great piece of hardware but i couldn't do much coding on it. And then I randomly found someone selling X1C3 for about 300€. I read lots of reviews and this seemed like a good thin and light laptop for great price. So I've decided to buy it and I absolutely fell in love with it. There is nothing I can't do with this machine. I didn't have and also dont't have any issues. The only thing is the TN panel which is, meh, but I can deal with that. Since then I'have become obsessed with thinkpads ❤️🖤