A toughie??

Not even!
"Did She Mention My Name",is the best of all 4 U.A. LP's.
It has the most recognized songs of that period of his career.
"Endless Wire",while having some good points,
is 10 to 11 years later and is nothing like the former.
WB records tried to make him sound conventional and/or "California" as was popular at the time.
That meaning,"California Rock" like the Eagles,Poco,Pablo Cruise etc.
Maybe if you compared EW with Dream Street Rose it would have been a challenge.
Good to fair songs on EW but none can hold a candle to D.S.M.M.N's roster.