six and two threes
whatever the case may be
as the case may be
obverse
alternative
mixed
between the hammer and the anvil
between a rock and a hard place
bicriterion
trilemma
bothridial
fork in the road
doubly
dilemma
binary
on the horns of a dilemma
vagrate
champagne problem
up to
wear two hats
ambidirectional
better
intercriteria
biconceptual
double-handedness
either-or
sidegrade
choosable
bispecificity
ideally
elect
reselection
wherebetween
electively
pushmi-pullyu
pick and choose
two-way
double-handed
polylemma
squeeze
you can't be half pregnant
option
contrariwise
biconditional
relative
interwork
optionlike
strike a medium
intercept
valedictorily
beta
conceptual inverse
a little from column A, a little from column B
possibility
multicriteria
double
box and cox
foretake
fork
opposite
intercase
interdistinguish
preferably
preferable
tough call
two-edged
joint
forechoose
first dibs
ambigenous
multialternative
otherwise
twi-reason
selected
interfactorial
multiface
alternize
bifactorial
intertegular
multicriterion
bifold
bisemous
way to go
liefer
interrelationship
diparametric
preferendum
of choice
choice
differentiate
above
beidellitic
timesaving