Tunze 1073.02 vs Sicce 2.0

[ronl]

Anyone know how these two pumps compare at 4-5' of head? Tunze is 634 gph at 0' and Sicce is 568 gph at 0', but both claim max head at 6.5'. As best I can tell, the Tunze does about 160-200 gph at 5'. The Sicce claims 317 gph at 5'. Does the Sicce really handle pressure better and do over 100 gph more at 5'? Or is Sicce misrepresenting the flow?

[rvitko]

The pumps only look identical because they were a cooperative effort, however, the impellers are different and final assembly of the 1073.020 is done at our facility in Penzberg Germany, they are not the same pump, they just share some common body molds.