I have fibre with BT and Sky.
My Sky connection 'feels' a fair bit faster but both are very good.
My BT connections gone off for a few hours. It's weird as it stays connected but websites just don't load. It's synced with an IP and everything... Then it just begins to work again. The modem shows no drop in connection and at BTs end it looks like it worked fine. It's done this a few times (never got to the bottom of it) and I have 7+ internet devices so it's 100% the connection. New modem and router didn't solve it.
My Sky is more reliable, never doing this kind of thing.
On BT if I start a torrent it will take a good few minutes to reach the 8 - 10Mb/s speeds.
On Sky it takes a good 10 - 30 seconds.
PlusNet whilst unlimited they have prioritisation. So say you begin a torrent and somebody starts to stream, I believe the torrent gets slowed down slightly.
I've also noticed PlusNet takes a while to reach full torrent speeds, probably muchlike BT.
I would personally choose PlusNet BT or Sky.
My order of choice: Sky, then BT then Plusnet.
In terms of pricing PlusNet is hard to beat for Fibre... Definitely do consider Skys 40Mbps package (it's half price for a while) as I honestly found barely any difference when I upgraded from 40 to 80Mbps, yes my speeds doubled but I had no real NEED for the extra speed.
Websites felt like they loaded at the same speed and even with over 7 users I couldn't tell any difference generally on day to day things like skype iplayer netflix and website loading...
Also via wireless I was maxxing around 40 - 50Mbps anyway so the 80Mbps wasn't getting used. This meant that unless I connected via a wire (which I do around once a year for like 5 mins) there wasn't much point.
Edited by ukhardy07 (Sun 01-Sep-13 04:51:04)