I spent the last few years using one of these as my mobile development solution. I still use it for scala development - not too underpowered for this. I feel

I spent the last few years using one of these as my mobile development solution. I still use it for scala development - not too underpowered for this. I feel I have been lucky with the keyboard, no real stuck keys and the keyboard doesn't feel cramped. And it slips into a small bag very easily. I have replaced the screen once, when I dropped something on it and the battery, which is expensive. The bad thing about this form factor is how every small issue is back-to-workshop.