We've had a very smooth experience with Barratt, that said it's important to research the actual building site as it is entirely dependent on how competent the local site manager is, ours has won national awards for the last 2 years so has a lot riding on remaining top of his game.
Freehold, no maintenance charges, traditional built house, and a budget that could afford a good sized house on a good plot with ample parking (double garage plus a driveway for 4 cars) the estate has all large houses so thankfully ample parking for all, people actually use their driveways unusually! Also over looks countryside and isn't badly overlooked.
We brought a snagger in, he found 60 snags but he was clutching at straws tbh, 95% of them I wouldn't have noticed, report went to Barratt and they were dealt with within 2 weeks (thank goodness I was working from home so I could just let people come and go, this would have been hard work if I was in the office admittedly!) the snagger said himself if all new builds were built like that he'd be out of a job.
The one issue we've had is lack of drainage in the garden, they've done it with all the houses, very frustrating but they've put in drainage since with no fight so it's not been an issue but annoying as a common issue with new builds.
The other really stressful part was how quickly we had to exchange and the pressure around that, wouldn't want to go through that again.
But all in all I absolutely love our house, it's solid, no paper thin walls here, extremely energy efficient. I don't need character in a home, I work in the heritage sector, I get it at work! I'm sure lots of people have said avoid, but you can't generalise about new builds any more than you can old houses. Research the local site, if it's already well established see if there is a Facebook page of residents already living there, find out how they've gotten on.