since i love 1 X 1 ribbing, tubular is my second most used cast on.
but i do sometimes do a 2 X 2 or other rib patterns, and then, like you, i tend to do a k2, purl 2 cast on,
or else.. i do a two toned braided, or a two toned german twisted, or some other fancy cast on (usually just an other variation of the Long tail)
i don't particularly like the knit cast on, or the cable cast (but cable is good for buttonholes!)
if i am not doing a 1 X 1 rib, --i will often sub a different edge (reversed and straight stocking knit, latvian braid cast on, and a few rows/rounds of latvian braiding..
for cast off, i always cast off in ribbing, (standard cast off)
unles i am having a fit of insanity--like when i did a grafted (kitchenered) cast off on a sweater that had a knit on buttonband/back neck ribbing..
(200 stitches to graft!)
and i like lace or i cord cast off's too.
details like these (a special cast on, a special edging for bind off) are things i enjoy, and that elevate my knitting from ho hum to WOW (or so i think!)
there is a link below to my blog, and on my blog, a link to a several albums of FO's. feel free to check it out