BEST LITTLE HAIR HOUSEForget high-priced salons. Women are going straight to the source - and saving big bucks.Katherine Pearl admits to being a high-maintenance hair client. Admitting that it is not the actual cut she fusses over but the salon experience. "I had a bad hair cut in Toronto, says this fashion editor."Then I found Rita. But I still hated going to Yorkville. I hated the factory feeling of being in a salon."Being invited to your hairdresser's living quarter is a fresh status symbol. "My clients have a good time telling people that they go to their hairdresser's house," says Rita Pereira who works from home.