I have a thinkpad x230 that I like a lot. Very small and light but fast enough for hard core C development. I use it plugged into an external screen/keyboard

I have a thinkpad x230 that I like a lot. Very small and light but fast enough for hard core C development. I use it plugged into an external screen/keyboard most of the time but I do work on it directly when traveling. I've got a larger thinkpad with 2x the cores/ram and I rarely use it. The light factor is compelling for me.