2011 e90 320d or e90 325i or e92 325i

good day gents,

as the topic says this or that or thaaat.

so i looked at a car today.
2011 e90 320d m sport pack
auto
white
xenons
sunroof
pdf
hi sound
had 129kkm on the clock.

then i was also looking at a 325i e92 2009 with 134kkm
space grey - silver
exclusive pack
auto

so i test drove the 320d, steering made a slight whiney sound went turning slightly either way.
suspension was too hard, better than my bros 2004 e46 318i m sport.
the car wasnt as nippy as i thought it would be.
first time driving a 320d

i have driven a 325i, manual though, but was quite nippy and felt like more power.
thing, is should i bite the bullet on the D, or keep looking.
i was initially looking for an e86 3.0si coupe z4, but cant find the spec in the one i want and i am starting to need a car more urgently.
so what to do.