Well, well, well... Where do I start?
Those multi-handset systems can be great, if they have required set of features... Nothing about the below in description... So here I go:
1. Can multiple handsets be connected to outside caller at the same time? How many? I've seen systems like this where if one handset picked up the call, no luck on others, so no "conference" between you in garage, wife in kitchen and mother in law in Florida....
2. Does it have intercom feature - ability to call from one handset to another without disturbing outside line (and as a bonus, some systems allow to call from HS A to HS B, while HS C is online with outside caller, or carry two independent HS to HS conversations)? There's a button labeled "int", but what does it do, and again - how?
3. Derived from "2" above. Can you name handsets so that when calling from one to another, you'd be choosing "Living Rm", rather than generic "handset 3"?
4. Does the answering machine allow call screening?
5. Very frustrating on some systems: is the speed dial/phone book individual to each handset, or global for the system? If individual, can you transfer it from handset to handset? If not, you'd have to program each separately!!!
6. A comment rather than a question: DECT is a good thing as far as I'm concerned. I've had almost all of them over time, and the DECT one is the one that is not afraid of the microwave, doesn't get in a way of WiFi, and has a very decent range!
*EDIT* Sounds like somebody answered my #5 while I was typing this... BEWARE - this is very frustrating shortcoming then!!! I've had a 2-handset system like that before (yes, just 2), and it was annoying as hell!