Bmw 740il vs 528i

Hi guys brand new here need some helpful advice looking
to buy my first bimmer tomrrow got into a car accident a
few weeks ago and insurance is taking forever to settle so
in the mean time I'm lookin at a 528i its a 99 with 133k
miles talked him down to 1,500 he said the car runs great
only problem is all the windows don't work I've replaced
window regulators before that's not a problem I got him
down really cheap cuz of it but there's also this 740il with
160k miles he wants 1,900 but he's willing to negotiate
has m5 front bumper looks great and he said drives like
new I could really use some insight help here what do you
guys think I should do any feedback would be greatly
appriciate I'm so exited to own a bmw!!