Jamesb
It's a no contest between the West Coast and the 458. A Merc SL500 vs a Ford Cougar.?
An electric metal folding roof v a fixed metal?
To see some of the features of the West a Coast look at the thread called "SL Revelations " in the West Coast Chat to get some idea of the features of the SL/West Coast
The SL cost a minimum of £85,000. Most over £95,000 by the time you had a few extras. Heated seats, key less go, glass roof. etc.