I loved my e39 540 wagon, and after getting one for my son, I thought the e34 was a great platform. Then there is the S38, which, while lacking the grunt of either the M62 or the S62 (which in lower rev ranges are very similar in the grunt category), is simply outstanding when you wind it up.
I may need this:
bringatrailer.com
I may need this:

1992 BMW M5 Touring
Bid for the chance to own a 1992 BMW M5 Touring at auction with Bring a Trailer, the home of the best vintage and classic cars online. Lot #34,780.