I prefer Channel 4 News, mainly because their 7pm news is an hour long so they devote more time to each story and seem to cover each very fully. But I really can't tell if they report more accurately or truthfully than any other channel.
But it does often seem that all TV news programmes get their news from the daily papers. Countless times I have heard 'breaking news' on the lunchtime or early evening TV news programmes and then realised that I read all about it in the DT, which went to press at 10pm the day before.
One piece of BBC TV incompetence sticks in my mind. I was watching live coverage of the appalling events of 9/11 and hopping between BBC and ITV. At about 1.55pm BST ITV reported and showed film of the collapse of the second twin tower, but BBC TV didn't report this event until about 2.05pm BST. It might not seem much but they were 10 minutes behind the rest of the world with their so-called live coverage, and so I watched the rest of this drama on ITV. I felt that this was a major pig's ear by the BBC in the coverage of one of the most significant news events of the modern era.