I want to buy a standby or whole house backup generator. I would like to do this as a turn-key purchase. I do not presently have propane so I will need to have a tank and line installed. Where do I start in order to get proposals. Some say go through your propane dealer while other say go through an electrical contractor because most propane dealers don't have the capability or knowledge to do maintenance and repairs to the generator if you need them. I need to make sure I get gas when I need it as well service attnetion if that baby fails to fire up when needed. What is the best way to go about getting this done with the least amount of long term aches and pains?