Im not familar with the Annapolis area so I dont know anybody to recommend, but I would ask around and if you find a company see if you can find out any background information on them such as any complaints they have. I would defenitly go with the Intelliflo rather than the Whisperflo. It allows programming for 4 different speeds for different pool, spa or water features applications, and could also lower your utility bills 30% to 90%. Theres a lot more information about it on our website 1800pools.com. Heres a link to the Intelliflo.
http://www.1800pools.com/011013_IntelliFlo_Pool_Pump_VS_3050_Variable_Speed_.html