said by andyross:Supposedly, it shouldn't make a difference which plan, unless Comcast changes things.
Depends on the CMTS you are connected to.
On an Arris C4 everyone that has a D3 modem will be able to bond on the upstream. However if you are on a Cisco uBR10012 you might only see certain tiers bonding on the upstream (i.e. 50/105.)
Different hardware/different limitations... Eventually I think the Cisco's will support USCB for all D3.0 modems as well (but may need some linecard upgrades.)