Cheap Car Rental, Best Price Guarantee! - Rentalcars.com or
www.economycarrentals.com i used many times in Holland. Way cheaper than direct at the rental company.
I never insure the own risk part. Just look how much your own risk is. I saw one time that in the end you paid 300 usd to insure an own risk of 1000 usd… I rented many times so if i make a big accident, i still saved money. Never rent with GPS also, most car it s build inn and they can not remove it anyway. And if it hasnīt GPS, use Google maps with your mobile. Some still charge 10 euro a day for GPS.