Panasonic:
+ In Display Size
+ In stand on the table
+ Charging contacts
+ Bright lighting
- Internal calls (many steps in the menu)
if, for example internally 4 calls, internal 4 is not turned on, so you get not communicated acoustically
Siemens:
+ Internal phone calls quickly and easily
+ Clear Siemens operation
- Is the date and time "forget" when off.