The idea for this thread spawned when the member ree created the "Alpina picture thread" in the pictrure section. So then, my question is, would yoU rather have the the muscular B5 from Alpina or the revv hungry M5 from BMW? I'd prefer if you're choice was based on all factors, if you want to be a track star then maybe the M5 is better for you, maybe you're willing to give that little comfort, but maybe you're thoughts are vice versa.
Alpina B5: 
4.4 Litre Supercharged 8 Cylinder
Bore & Stroke: 92,0 x 82,7mm
Maxinum Power: 500PS @ 5,500 rpm
Maxinum Torque: 700Nm @ 4,250 rpm
Brakes: 374mm front / 370mm rear
Kerbweight: 1835kg
Transmission: 5 Speed Automatic
Performance: 0-100 km/h: 4.4 seconds
0-160 km/h: 9.6 seconds
0-200 km/h: 14.5 seconds
100 km/h-0: 34.4 metres
Hockenheim Lap Time: 1:19.0
Top Speed: 314 km/h
80-120 km/h: 4 / 5 / 6
4.1 / 6.4 / 11.3
BMW M5: 
5.0 Litre 10 Cylinder
Bore & Stroke: 92,0 x 75,2mm
Maxinum Power: 507PS @ 7,750 rpm
Maxinum Torque: 520Nm @ 6,100 rpm
Brakes: 374mm front / 370mm rear
Kerbweight: 1848kg
Transmission: 7 Speed with Sequential
Performance: 0-100 km/h: 4.5 seconds
0-160 km/h: 9.2 seconds
0-200 km/h: 13.8 seconds
100 km/h-0: 36.1 metres
Hockenheim Lap Time: 1:16.5
Top Speed: 320+ km/h
80-120 km/h: 4 / 5 / 6
4.5 / 5.9 / 6.9