I can't wait until they put a 250gb cap on my 50mbit cable line. That'll last me less than 12 hours at full tilt downloading.
As it stands Comcast sucks:
Their advertised speeds for everything but the 50mbit line include the temporary speed boost misfunction, so after 20MB of download in an unspecified time, at an unspecified frequency, your 30mbit down / 7mbit up connection goes to 22/5, where it stays.
They managed to get confused when I moved and continue charging me for 2 accounts, even though I verified with them when I called to tell them I moved that they would stop charging me. They still owe me a decent amount of money despite over a dozen calls confirming it had been credited to my account (it took as many to simply stop billing on the disconnected address as well.) I've talked to multiple other people to whom this exact thing has happened, and I'm reasonably sure Comcast does it on purpose, since the only way to get that money back is to take them to small claims court.
After I moved they saw that I had 2 accounts and decided to cut off my new one by having a technician drive out and unplug my connection at the street. A week after that was fixed, the previous resident of my flat called to cancel their old account, so Comcast drove out yet again and unplugged my connection. Each time a technician had to drive back out to re-connect me, and I had to get my call escalated 3 times to get someone that could schedule that tech to get there in less than a week. If you accidentally unplug something that I'm paying for (I was unable to get a refund for their accidents) you better damned well fix the mistake quickly.
Whenever I call to report an outage, the tier 1 tech support tells me that my router is at fault, because it's only 802.11G, and I should buy one that's 802.11N to fix it. They told me that both times their company physically cut my connection, and they can't contemplate the fact that my wireless AP is separate from my router, so my wireless speed can't possible affect my wired network - it isn't even on the same vlan.
The technician that installed my modem (Because I can't apparently can't be trusted to call in with a mac address.. oh well that would have meant hours on hold on my cell phone) was clearly stoned out of his head, didn't bring the right equipment, and neglected to record the other equipment which he collected. Comcast later tried to bill me for the items that he forgot to record.
And the saddest part is, that even if they do put a 250gb cap on my connection, it'll still be the best ISP available in my flat, where the only alternative is 256K DSL for nearly the same price.