Which is preferred?
While there are simularities, it's almost an apples and oranges comparision.
The food at Slanted Door is modernized Vietnamese (excellent ingredients) and The House more of Asian influenced bistro (for lack of a better term) high in protein and generous portions. The prices and physical space reflect these differences. SD is a large modern space with a full bar in a busy location (good or bad). TH is a small, more reasonably priced (relative), more intimate place that seats maybe 50 but it is in North Beach (stuff happening in the 'hood).