If comparing to same size traditional fiber glass boat, a Zodiac weight less, requires less HP engine to have fun with, hull is more fuel & water efficient, runs well on chop.
The posted model corresponds to a 5 meter PVC rib which costs fully rigged 20 grand, the 420 comes factory rigged with just a 40 HP. The name is associated with boating status, just like cars. Personally wouldn't buy one, there are much better priced other brands alternatives.
Happy Boating