I've owned two Uniden phones, the latest being a 5.6GHz model. I bought them because of the price and features, mostly.
I totally regret the purchase. The battery life is about half of what I'm used to for a cordless phone. The battery always seems to die at the worst times. I figured my battery was perhaps faulty, so I dropped $25 for a replacement battery. Same problem. Uniden phones seem to be very power hungry. Also, there is no second battery in the base to swap out when you need it. You gotta swipe a battery from another handset.
I don't have the model you're considering, but I'm wary of Uniden phones. I recently switched back to a Panasonic and haven't regretted it. Battery life is a total non-issue.
Anyway, I hope this helped.