Thanks for the comments, everyone! I really appreciate it.
I would like to remind you all that I'm still using the DA* and the FA* on the APS-C format. It would seem that the FA* has an edge now (because of nicer background separation) but when a FF Pentax ever emerges I would guess that the FA* would give the same bokeh as the DA* 55.
Nevertheless, at this moment I also prefer the FA* for several reasons. For starters it focuses much faster than the DA*, and I like the heft (don't rule out the bling-bling factor
)
However... the DA* 55 is definitely growing on me. I won't rule it out! It definitely has its place in my line-up, and it seems that I also like it for head & shoulders portraits.