I will admit, a part of me is tempted to double up, as it looks as though the 2xLP is beginning to sell out everywhere. Please report back on the comparison!
The attraction with the double LP for me was the gatefold and booklet. I think I would have chosen the double if it was a tip-on jacket (it's not is it?). But if the sound is markedly better, I would also have no hesitation in doubling up. I feared that the blue would be like the yellow colored version of their first LP, which is quite noisy. Glad to hear that doesn't seem to be the case.