If you want the noise, then the Aston. If you want the looks, then the Maser. If you want the drive, then the 911. Neither the Aston nor the Maser are as good to drive as a 911, but the interiors are a nicer place to be and stock for stock, make a much better noise. It's a toss up between the occasion and having something that handles as well as it looks. No right or wrong answer, really.
M6 definitely worth a shout, you'll never get an NA V10 in a sensibly priced car again.