only help i can provide is a price comparison because I sell against the Edison all the time...In MN there price before negotiation is right around $7,295 w/ accessories...although I've seen them at the "move as many as possible" price of $5,995 at home-shows/fairs/events/etc.
haven't came across the four winds brand in years so I'm not much help there, a wet test and getting quotes on both should help make your decision much easier...good luck