Thanks. Anything Mac is a non-starter. I'm ABA (Anything But Apple). Wasn't aware of the Lenovo. I know they had the X220 but there were varying reports of whether it had an IPS panel or not. The 12.5" screen size is pretty small though. Would have to be able to sit down with one and have PS open to know whether there's sufficient screen real estate.
I think the Asus Zenbook has an IPS panel as well but wasn't considering it, again, because of screen size. May have to put it in the mix as well then.