What filter should I buy ?

[Cigarette1]

Remember my Nring pictures from 2 months ago






We're planning on going back there a couple of times this summer and we'll also be attending many trackdays @ Spa. And since I haven't saved up enough to buy a DSLRkit, I'll "invest" a bit in my Sony DSC-P92

What should I get to not have as crappy pics as last time ?

- SONY VF-30NK neutral density filter



# Neutral Density Filter reduces brightness and minimizes over exposure in bright sunlight

# Clear Multi Coat Filter protects the lens from dust and scratches


or



- SONY VF-30CPKS polarizing filter



# Polarizing filter suppresses unwanted reflections off glass and water
# Hard carrying case for protection
# Multi-coated filter protects lens from dust and streaks
# Fits 30mm lens diameter


Or do I need both ?

Thanks