Panasonic
Doc
Panasonic gets my vote. Ive got a Panasonic model kx-tc1700b.
Its a 900 mhz model, about 5 years old, and has worked great.
The base unit sits in the basement at my house, and I can walk all over my 2 acre lot and then some with clear reception.
Forgot one thing... . I read somewhere that the 2. 4 ghz phones are not worth the extra money. The reception is no better than a 900 mhz phone.
Hope this helps.
Jason