Have a look at the entry stax thread... Else what sound sig do you like? Because all you mentioned are viable options..
I'm back on my lambda sig's btw, got the pads back on again.. Now with 1-2 mm of extra space, it is really nice, but the housing is still slightly sticky. Can't say how it affects the sound, but it seems less intimate than I remember. Probably just because I have grown accustomed to the 500's.
Have a question btw. How do you like to position your lambdas? I guess it is a well known fact that the sound is sligthly colored by how you position the earspeakers? Anyway, I like to have them sitting high on my head with the lower part of the housing shifted forward, so the thick part of the pads is just behind/slightly below my ears.
Edited by davidsh - 8/20/13 at 1:37pm