Don't know about you but I always go for the smaller one simply because it's, well, smaller.
Can we at least have some sort of power generation thing (either a fuel cell or an RTG) included in the bigger one? Or a tank to store the fuels/ore in? The efficiency is also something I don't get. Would an IRL ISRU unit be more efficient if it was upscaled?
And please don't argue that 'it's a gaem!!!!'. I'm already kind of sick of all these comments using that as a valid point. Let's have a s