Cost benefits (for myself at least)
NTL = £39 for 256kbps upstream (which is what I'm really after), 1.5Mbps down, capped at 30Gb per month (or 1Gb per day).
PlusNet = £14.99 for 512down/256kbps upstream. Capped at 1Gb per month.
or PlusNet = £21.99 for 512down/256up -
uncapped
or PlusNet = £19.99 for 2Mbps (256upstream), capped at 1Gb per month
or PlusNet = £40 for 2Mbps down/256kbps up,
uncapped.
i.e. whatever I pay with PlusNet I get far more value for money than NTL.
Caps
Sure some are capped. So are NTL.
Some ADSL options are not capped though. NTL don't offer uncapped.
Some ADSL options offer static IPs. NTL do not.
As for people who are using 1Mbps would be people downloading 24/7 and thus 1Gb cap is useless, well that's not true. There's more to having higher bandwidth than just being able to download pirate movies 24/7.
1Mbps to me (or even 2Mbps) has a single use in just making a download quicker.
e.g. if I need to download XP SP2, I don't have to wait too long. It won't exceed the cap as it's only about 200Mb (less than that if you don't download the whole lot). Benefit of the bandwidth is it downloads quick. Doesn't mean by having more bandwidth I'm going to be downloading loads of large downloads all the time, it's just when it comes to a large download I don't want to be waiting too long.
That said, the options for uncapped or higher capped services on ADSL still work out cheaper or better value than NTL by far.
Besides, the likes of PlusNet offer PAYG if you go above the cap and you can pay for higher caps or uncapped if you find you're using more.
Line Rental
BT Line - £10.50
NTL Line - £10.50
No difference. That's comparing BT's Option 1 vs NTL's 5p Talk Plan.
Whatever happens I need a phone line either way and I don't care really if it's with BT so I can get ADSL.
At least with BT I can have features that are impossible to get with NTL,
and I can use the hundreds of cheap call providers that don't work with NTL.
Customer Service
Hands down, BT from my previous experience and that of almost all friends/family/colleagues, wins in every department when it comes to CS. I won't go into the miserable service I've had over the years with NTL, but they are reason enough to boot NTL alone regardless of my broadband quality. The number of grumbles from people at work when NTL are mentioned speaks volumes.
NTL engineers don't turn up on time, if at all, and no compensation for time wasted. BT guarantee you a time slot, actually turn up and even take your phone/mobile number to call you if they will be late or if they don't need to turn up at all (i.e. it's fixed/installed externally).
NTL's support line is NOT free, keeps you on hold for ages, patronises you and then cuts you off, EVERY TIME
.
PlusNet (for example)...
FREE support line.
From what people I know with PlusNet they've reported good CS.
Speed
When NTL broadband is working, yes it's nippy and you get near to full speed.
However, if you are one of the thousands on borderline signal levels, full speed is no use when the modem itself is rebooting all the time and NTL are absolutely no use when it comes to fixing it.
All people I know with ADSL are getting around 450 to 500kbps speeds on 512kbps. No one I know is getting poor speeds at peak periods.
Plus, if you live in a majority NTL area and switch to ADSL you'll probably have very little contention
On ADSL you can have up to 2Mbps (subject to availability). NTL were very reluctant to bump to 1.5Mbps and they accuse the top tier users of being "bandwidth hoggers". ADSL in LLU areas goes up to 4Mbps. Technology is evolving all the time and ADSL has a lot of capacity for improvement without having to replace the entire network. NTL's network is at capacity and oversubscribed already and many people need replacement wires to even get their cable modems working at all!
Reliability
See Signal Levels with NTL. They suck (often)
. Must be the major cause of customer problems and yet NTL never want to believe anything is actually wrong. Requires frequent and costly engineer call outs to "attempt" to fix.
At least with BT, they'll tell you up front if your line is crap so you don't have to put up with a terrible service and no help in fixing it for years on end.
If the phone line is faulty, BT go out of their way to fix it quick and compensate if it's down for more than a day. With NTL you are not guaranteed either phone or internet and compensation is hard to achieve.
In summary
BT/ADSL may not be wonderful but my long experience of NTL (right back to CableTel days) is so appalling I have no choice but to walk, having tried every other avenue. The cheaper ADSL prices, higher speeds and forward thinking ISPs (as opposed to NTLs "1Mbps users are bandwidth hoggers" attitude
) add to the incentive.