How to determine the best one to purchase for your business.
Questions to consider:
Will the device be shared by employees?
If yes, we recommend a cordless phone or multiple headsets. A headset is very personal as it touches the ears and face of the user and should only be used by one employee. 
Will the user be sitting at the desk or moving around the office?
Users who sit at a desk but need ergonomic support for head or neck can benefit from a wired or wireless headset, even if the employee does not leave the general area of the phone.
Will the user need to transfer calls?
If yes, we recommend either a headset for a user that stays near a telephone to be able to transfer OR a cordless if calls will need to be transferred from anywhere in the office. A headset is designed to answer and disconnect only when away from the phone.
Will the user be on the phone for a very long time?
If yes, we recommend a headset as it is completely handsfree for your mobile employee.
Will the user need to call other extensions on the system when away from the desk phone? Will the user need to make calls when away from the desk phone?
If yes, we recommend a cordless phone that is an extension of the phone system and can easily call other exts or dial out from anywhere.
Please contact us for more information and pricing on wired and wireless headsets and cordless phone options.