I'm on the fence. On one side, those dell xps' are ultra compact and cover all my coding needs, but the price/performance ratio is absurd. And i'm thinking of why not simply get a powerful desktop and a tablet. And if i'm in the forest and need to do work while being chased by bears, i can simply remote desktop to the powerful PC and do the job.

It's obvious that you can't have the best of both worlds in a single package, but the latter option comes close to it with little compromise. And this compromise will become negligible if android becomes open and grants full access to the system so that you can actually compile and run whatever you want on it.