What Car?

Hello I'm looking for advice, I currently have too many cars, each has ts own merits for what i use them for but my wife has suggested i slim the fleet down and find one car that can do everything i use them for, well after much deliberation i think i've got the list down to about 2 cars and wondered what you guys think and if any of you have any experience with them..

anyway at the moment  i have

a Peugeot 1007 used for commuting to work 5 days a week and does that job admirally,

 I also have a Bentley Mulsanne S Great grand tourer and fun weekend car (when i'm not towing the caravan, ever tried finding a tow bar for a Bentley ;) not easy lol )

and finally a old Pajero 4x4 great for towing but looking old and tired..

so I need a car that can be used for commuting, fun at the weekends and can tow our 1999 Avondale 4 berth caravan, so far i have shortlisted

1. Volvo C70 2.5 oil burner auto

2. Mercedes 320 CLK Coupe 3.0 oli burner again Auto

 I prefer Coupes or hard top convertibles  so am quite limited to choice. any other suggestions would be appriciated or any comments on the above pair. i thought diesels as it  would be replacing 3 cars with combined milage of about 16k a year.. Over to you.