3.2 Manuals for me, currently have one of each Saloon and Estate, both Ex Plod, the Saloon has been Re Mapped and Cat Back Stainless Performance Exhaust and really does motor over standard, also has the added benefit of an LPG Tank in the Boot.
My preference is based on I prefer Manuals, better MPG and a better driver control of the car when you push it, the Police suspension set up was good and suits a Manual Box when being thrown around corners, together with a late year both or 2003 so they need to be 3.2's.
Think if I was to do it all over again I would go down the late 3.0 route, Manual, MV6 or Plod, the 3.0 can easily be brought to 3.2 Power and beyond with some simple Mods and a Re Map, they seem to have more grunt at the top end and are a darn site better on MPG over the 3.2 , or better than standard 3.0 with a simple Re Chip.