Had TWC as an option initially and now have FIOS option as well. Have the 3mb+premier cable package. Install was easy and have Motorola DCX3400 dvr.
Update: Just got a mailer from FIOS with a very attractive package. $64.99 triple play for a year. Considering switching after the Knicks season is over b/c they still don't have MSG HD. If FIOS doesn't get MSG by the end of the year though might switch back.
Update: Now that FIOS has MSGHD I have decided to switch over. I wasn't really that upset with RCN but they do have some holes in their offerings like the Big Ten Network and the WLIW subchannels. I will not rule out coming back at some point.