Hope I'm not rudely barging in on the conversation, gents. But I thought some of you might want to know this. Also I view it as a continuation of the prior conversation:
For those preferring a lightweight laptop (mine weighs CA 1 1/2 lbs.) there is an alternative to mobile devices altogether: Internet phone service.
I researched and found something called Magic Jack. Don't know if it is available in Europe or elsewhere outside the US. But here's how it works:
You purchase the attachment that goes right into either an ethernet or USB port. You do not need a landline or cell phone to connect to, only high-speed Web service. I believe there is an app that appears onscreen looking like a mobile phone you can enter #s into, or else you can import your existing contacts online automatically---not manually. You can transfer your existing cell # once service is activated. Service is $35/year, and a 5-year plan can also be had for a virtual song.
I just ordered it. For me it's great, because now my entire digital world---Web, files, etc,, etc,. will be on one lightweight device. No more calls breaking up with crappy Metro PCS service. No more exposure to microwaves at close range.
And I will save a pile of money!!