[Purchasing advice] BMW 630i Coupé or 650i Coupé – EZ 2007

Hello BMW fans, after a lot of back and forth (new car, CLS 350) I have changed my mind now and keep my E-Class and buy now a second used car. On the internet I have now found these 2 sales items. 1. BMW 630i CoupéKilometerstand: 41,400 km First registration: 06/2007 Power: 190 kW Fuel: Petrol Price: 38,350,- € Gearbox: Automatic Equipment: • Leather Dakota Black • Special paint • Interior trim Alu. Kodiaksilber • Mobile navigation system 2. B MW 650i CoupéKilometer level: 54.285 km First registration: 04/2007 Power: 270 kW Fuel: Petrol Price: 42.500,- € Gearbox: Automatic Equipment: • Leather Pearl black/basal grey • Mineral silver metallic • Innovation package Plus – Active speed control – Head-Up display • Glass roof, electric with sliding and lifting function • Park Distance Control (PCD) • Navigation system Professional • Night Vision Control • Voice input system • Mobile phone preparation Bluetooth • Seat adjustment elect Risch mit Memory These features are the same for both: • Soft Close Automatic • Interior and exterior mirror autom. blinding • Lighting package • Innovation package – High-light assistant – Adaptive cornering light – Comfort access • Driving dynamics package – Active steering – Dynamic Drive • HiFi speaker system • M leather steering wheel • Roof sky Individual anthracite • Headlight washing system • High gloss Shadow Line • Sports seats for drivers and passengers The 650i of course has more performance, as well as equipment, but w Is it much more expensive than the 630i? And how does the price-performance ratio of the two coupés look? Are the offers good? I don’t drive much myself. : )