Having owned a number of powerful cars (2 x RS4 b7's, TTRS, RS6 AVANT B7, V8 M3 etc) I loved the exclusivity of my old ISF and was hugely tempted to have another. This time I tried the RCF but my 12yr really struggled both both head and leg room in the rear and if I'm honest it wasn't as exciting as the ISF I would recommend the ISF to anyone this time around I have chosen to go the route of a C63 AMG Coupe which is just a beast....
The ISF values seem to be really steady at the minute, hopefully it stays that way for the street sleepers...