Nostra Homes

Hi, has anyone built with Nostra homes and can give me some feedback?
Are they a big well known company? My only concern atm considering building with them over Dennis family homes is that they’ll go bust! Not many have heard of them and it makes me nervous but they’re far more accommodating than Dennis in terms of custom build.
Would love your advice . Dennis v nostra. The only thing nostra will do that Dennis won’t to floor plans im considering is extra ensuites in the rooms upstairs .