There are some higher end mainstream builders, like Berkeley Homes. There will be snags with any new build, but Berkeley are better than most at responding and fixing.
I wouldn’t buy from any developer who provides only the basics, because the hidden costs of making the property habitable can be considerable. Upgrades are possible at most build stages, but are expensive.
I expect white goods, decent floor covering, turfed back garden, landscaped front garden ( although they’re usually very corporate), good quality fittings.
Persimmon have a poor reputation nationally, not a fan of Bovis, Bellway, Barratt or Taylor Woodrow. Linden Homes, Cala Homes and Redrow have a lot of sites. Redrow are very pushy when you make an enquiry, unless you stop them sending emails.
We’ve had two Berkeley Homes, but they are more expensive. We’ve looked at Bloor Homes and I like their style, but they’ve not had what we want in budget when we’ve been looking.
In the end, it depends on the quality of the work the sub contractors do and that varies from site to site, phase to phase and house to house. Expect teething problems with any new house, but expect them to be acknowledged and rectified in timely fashion. Expect a good finish on walls, ceilings, floors, fixtures and fittings and complain if it isn’t.