Why the rush? There'll always be new stock... Anyways I agree with gummy - get the FA35 f2 from pinholecam if you have the spare cash. It's one hell of a lens! It's stuck on my k5 90% of the time now when I'm not shooting landscapes!
TS, personally between the two, I'd get the 40XS if for portraits, though a FA50/1.4 is far better.
A bit further working distance.
Indoor usage for portraits, both are good.
The 35mm is a bit more versatile, but really close.
i will suggest the 40mm. personally deciding between this 2 as well since both are cheap and good plus both can be used on film cameras. have you seen pinholecam samples from the 40mm? good IQ plus the ultra thin size is a hands down winner for me.