Just hoping for a bit of advice. We have booked to go to western Canada in the summer and just booking car hire now. I can't remember which way round it was but there is a significant difference in price between Hertz and Dollar Rental. Do you think they are broadly comparable in terms of quality of vehicle within the same price bracket? For a three week rental one of them is around £800 more than the other one.Grateful for any advice If anyone has any experience of these two companies?