From experience if you want WDR and Low Light then use the SONY... Even the E Series Camera 3MP Sony camera will out perform most 3MP cameras..
The Best SONY camera though is still the 1.4MP V series cameras with View-DR... Even better at WDR then the 3MP due to the light the Exmor can process...
http://www.youtube.com/watch?v=py7LWPlmac0
Watch at the end as the guy shines a light into the camera, no mobotix, avigilon, Sanyo, Panasonic, whatever can handle that type of punshment and still see in those conditions but SONY can " title="Applause" />
The IR's are only short Range and need something to reflect but if you want to go bigtime with IR then the RAYTEC products are second to none.
http://www.rayteccctv.com/videos.aspx?id=17
I use the View-DR on problem areas and then the SONY E series to save some cash on the no vital areas.
Thanks
MM