I'm currently using the Siemens Gigaset 4000 Comfort cordless phone series, and this is one sweet phone. I use it a lot (at least one hour/day), and I've never had any problems with it. You can connect up to seven phones to the base station. I'm using two now, and it works great.
One function of the phone I'm particulary fond of is the hands-free function. It's so good even that I NEVER phone with the phone to my ear anymore. Ever. I can walk 2-3 meters away from the phone, talk at a normal volume and the person on the other side of the line won't notice that I'm talking hands-free. Truely great stuff, I can't recommend them enough!