Before signing up or switching your internet service, check the site over at Broadband National, as they will list out the best deals (rebates, free routers, etc) from most providers in your area.
Check it out: Broadband National - Current ISP Deals 
ISPs included:
- ATT/Yahoo
- Comcast
- Earthlink
- Quest
- Time Warner
- ACC Business
- Aire Spring
- Broadwing
- CBeyond
- Charter Communications
- Choice One Communications
- Covad
- HughsNet
- eschelon
- FDN Communications
- Greenpath Networks
- Insight
- deltacom
- MegaPath Networks
- mPower Communications
- Netifice Communications
- New Edge Networks
- Nuvox
- Cablevision
- PAETEC Communications
- primus
- Savvis
- Speakeasy
- Embarq
- STS Telecom
- TelePacific
- Virtela Communications
- XO
- Cleartel Communications
- Network Innovations
- ATN