First, the Panasonic.  This is one HELLUVA phone system!!!  This is not only expandable for up to 8 handsets, but those handsets can be cameras with speaker and mic too!  All parts of this system are made of silver plastic.  A 1.5" color LCD can be configured to show customized background wallpaper, using the mini-USB port on each handset, and of course, the video from cameras in the system.  The base has speakerphone and answering machine, but only a sorry-looking LCD indicating the number of unheard messages.  Range is excellent, most likely because of the two antennae, voice quality is excellent, and speakerphone performance is much better than others, on both the handset and base.  Far fewer cut-off words here.  Intercom between phones is also much more advanced than others.  It can be setup to auto answer or not.  Auto answer makes the intercom more of a paging speakerphone, where the receiver's phone is automatically on speaker, and need not be picked up or turned on.  This is great for conversing with kids from another room, unlike other phones which only have a listening function (ie. room monitor).  Caller ID is also more sophisticated.  This phone has talking caller ID, very useful when busy tending other things, not having to go over to the phone and look at the display.  The handsets also have headset jacks, and batteries last several days without recharging as well. 

But the killer app of this phone is the camera.  The camera sits on a base which can be rotated manually, and has a speaker and mic.  There is also a corded pushbutton, acting as a "call" button.  One camera can serve as a video doorbell, provided it is well insulated from the elements, protected from theft or vandalism.  I'm sure modders can figure something out...  Anyways, the video stream is not TV-like.  It is somewhere around 2 fps, but that's fine for its purposes.  Panasonic should be able to increase performance and maybe add features to the camera (like maybe bright LED lighting) in the future. 

Because of the innovative camera, super-useful paging and intercom features, excellent quality and support, the Panasonic gets highest honors:

Next, the Uniden.  This is the TRU9485 set.  It was purchased at a retail outlet, and comes with a speakerphone base with answering system, a total of four handsets, and three charging stands.  One handset sits on the base.  Finish is dark gray plastic with silver accents, rubberized buttons on the handset, and an orange backlight to all LCD screens and buttons.  An LED on the top of the handset indicates messages on the machine.

Range was good on this phone, and so was voice quality.  Speakerphone on the handsets were very good, but on the base, the person on the other end hears words being cutoff in the beginning, when a few feet away from the base.  Answering machine functions were good as well, and can be retrieved remotely.  The base has a nice LCD display showing numerous settings and information such as date and time.  Each handset also has a headset jack, and its battery lasts for several days of use if left off its charging stand/base.  Up to 10 handsets can be used in this system, and each handset can call each other using the intercom feature.  It also has a room monitor feature, useful for listening to babies in a separate room.  Caller ID numbers displayed properly, however when trying to dial back such numbers, the phone does not add the required "1" prior to the area code.  Other than that, this is a solid phone...