Complex sentence: This film version of the operetta is, like the 1929 film version, almost never seen today and copies are hard to come by, although it is technically more sophisticated than the earlier film due to its large budget and advances in both sound and color.
Split into simpler sentences: This film version of the operetta was, like the 1929 film version, almost never seen after its original release. Technically the film is more sophisticated than the earlier film due to its large budget and advances in both sound and color.