A new client has their office in a BIG old (circa 1800's) house, about 5000 Sq Ft. There are 3 floors with users spread about. They also move from floor to floor regularly. They are complaining that the wireless signal is weak in certain areas and that the network is often sluggish.
Currently they only have a Linksys E4200 wireless router serving all clients (no APs, Extenders). It is located at a remote 2nd Floor corner.
I've read good things about Ubiquiti Networks UniFi PRO Enterprise WiFi System (UAP-PRO-3). It has a 'hand-off' feature so that users can roam at will and always be connected to the strongest AP. Was thinking of spreading 3 of them around (1 on each floor) and using the POE feature to wire them to their gigabit switch via Cat5e.
Any other recommendations or 'been there, done that' experiences?
Points to best explained and detailed answer (ie, please don't just say 'Get a Sonicwall X or a Cisco X'). Ease of setup, use and range are important so please let me know why you recommend what you do.