Right guys and girls I have had the 735 V8 e65 for six months now and thought it was time i compared it to the X5 4.6 e53 which it replaced .... the following are all my opinion not what it says on paper :-) Performance ...... The Performance of the X5 was far more raw and existing and pulled away like a hot hatch been stolen from a car park even at speeds of 100mph if you put your foot down in the X5 it still took off and reached 130 + in the blink of an eye .... Economy ... Keep this short cos if you moan about how much petrol you use get a smart car lets just say the 7 series in a little bit better on juice .. Comfort .. The X5 was a very comfy ride bit hard on the suspension but the cream leather was soft and all in all a nice drive .. The 7 series however is like driving your favourite arm chair with the comfort pack even the hunch back of nochrodamb could get the seats to his liking . When I bought it the drive home was 400 miles + without a stop and it felt like I popped down to tesco 7 series wins on this one hands down. Value for money Both the X5 and the 7 series were of the same year 2002 when new I think the X5 was a bit more money than the 7series as it was a carbon ltd eddition . A couple of members have seen both the cars in question and I'm sure will agree they were / are in fantastic condition. But the 7 series came with its original bill of sale £57,000 I paid £3,800 now that in my eyes is value for money for a second hand car that's done 84,000 miles with a full history .. My verdict Love the 7 series but miss showing the boy racers that at 44 years old they ain't gonna beat me away from the lights !!!!