No special reason other than just to try something different. I haven't driven either yet so I don't really know what to expect, but for what I've seen them advertised for, they are sparking my interest. Looks like 04/05 S55s are going in the neighborhood of 50 to 70K and E55s about 10K less. The 469hp sounds pretty interesting too...

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'08 335i Coupe - Barbera Red / Saddle Leather / Light Poplar Wood / 6spd Manual
Options: Sport, Premium, Cold Weather, Comfort Access, Active Steering (awesome!), Power Rear Shade, IPod Adapter, Navigation w/IDrive
Mods: M6 Wheels, Split Armrest, M-Steering Wheel, Euro Light Switch w/Rear Fog Lights, Short Shift Knob w/Matching E-Brake Handle, Clear Reflectors, CDV, Clear Bra

Retired:'04 X5 4.4i