I bought a Barratt new-build and lived in it for 16 years before we bought a Bloor new-build two years ago. We looked at Barratt homes - and immediately dismissed the idea - when we moved as well, and the Bloor development is on a split site with Redrow.
Given the choice, based on my experience Bloor would win hands down every time. We've had no trouble at all, just a few minor snags which got fixed very quickly.
The house itself is well-designed and proportioned, which is not something I could say about the contemporary Barratt properties we looked at, it is built very well with decent materials, and the customisation/upgrade options were both wide-ranging (not a Barratt thing) and well-priced (not a Redrow thing). It is designed and built up to a standard, not down to a price like my last Barratt house was, and it just feels like a house that was designed for how people actually live in the 21st century. To give an example, each bedroom has four double sockets. In the last Barratt house there was one, and in the designated office there was one single socket, on the far side of the room from the phone socket!
The Bloor sales team were brilliant, constantly keeping us up to date but not pressuring us, even when our sale collapsed. Customer care has been brilliant. The site manager gave us his mobile number when we took delivery, and looked after us very well. They even told us what make/model of bricks they used on the handover form, so that we can match them in future.
I think a lot depends on how good your site manager is, and how long they stay around. Bloor have a very good reputation for theirs, others do not (BIL is one for another national builder, and openly admits his are useless chancers).
The development itself is not massive at 179 plots but there are still nearly 20 different designs on the estate, so it isn't row after row of identical homes, like you get with some builders. Both Bloor and Redrow have now left the site, but Bloor actually finished everything. Redrow did not.