one decimal place off on the q up there. :-)
in winisd, the effect of stuffing the enclosure on q can be done by changing qa which is 100 by default down to something like 7 or 10 for a fully stuffed enclosure. it is under the "advanced" button under the enclosure size. with stuffing, q is around 0.8 or a little lower, which is fine.
the si ht looks a little better on the model, but it doesn't have as good of inductance control, so neither wins on all accounts.