Owned Panasonic, Sony, VTech, Uniden, and AT&T. Do NOT buy Sony, Vtech or AT&T... they SUCK.
The 2.4GHz Panasonic I own is great... but I don't have a wireless system in my house yet. The Uniden is 2.4GHz too... I do wish the battery life were a little longer, but I guess you have to sacrifice something when the handset is so small. I love speakerphone in the handset.