Here is my opinion on the matter.
Wyeast 1056 = US-05... they behave the same in every way. I've been doing little observations over the last few years. It might be worth a split batch to finalise these opinions, however they both need fining in the fermenter to aid in flocculation, they are both producers of "vanilla" type esters at 22 degrees plus... also they both ferment quite happily at the 15 degree mark.
WLP001 on the other hand drops bright at 5 degrees and less... it also flocs on its own at room temp (over time). At warmer temps, the ester is "fruity" compared to "vanillary". The palate this yeast creates is fuller compared to the other 2 - the mouthfeel as a result has more "presence"...
In my opinion - out of the 3 strains, WLP001 is superior. Dont get me wrong though: they are all very good strains, however if I were to choose 1 out of the lot... I'd pick 001.
Let the debate rage.