WTB: E39 M5 or F10 550i 6MT

[Stealth658]

Hey, I'm looking to buy a well-maintained E39 M5 with ~100k miles or well-specced F10 550i 6MT only (auto is not an option). The only thing that's a necessity is heated seats (rear heated seats also in the F10). I'm very open to considering all color options (though I prefer the classic exteriors - AW, TiAg, JB), and I'm willing to drive a decent amount for the right car. Budget varies based on the car and options.

Would also be willing to consider a 6MT F10 535i or M5 for the right price.