I have the opportunity to purchase one of three BMWs. One is a 1990 325i with a 5-speed and 145k miles. The others are 88 (270k miles) and 87 (150k miles) 735s. I don't know what type of transmission the 735s have, although I am aware of a manual being offered in the 88 735 (*crosses fingers). My question is, which of these would you recommend?