Ditto Cried here. I like the aforementioned tempo shift on Stranger compared to Powerslave and agree with Wingman RE its evocative nature. But Powerslave is class, definitive dave, the flow of the notes and a great atmosphere and it instantly conjures up the image of Dave on LAD. If it makes sense, i think Stranger is better but i prefer Powerslave. I think.
The only way I can split the two is that if Adrian's SIASL solo replaced both Dave's (first) and Adrian's solos in Powerslave the song would still be killer. This idea of hearing this excites me and I may even edit Powerslave and give it a listen.
So I give SIASL the win for giving me a project to do next weekend.