Ok so I am beginning my quest to upgrade to a newer, faster ride.

So far looking at M series BMW (alittle spendy but maybe worth it?), 325 series BMW, G35, Acura RL/TL, and anything anyone else thinks goes in here. I'll probably go test drive the new accord to for good measure

So my questions are this, if I go in with the intention of paying for it all upfront in cash what kind of discount can I get? Also can I be alittle more pushy/demanding when it comes to options and other stuff or am I just stuck with free matts