Got the water pump off the 98' C280 and now need to choose a new one.

The water pump I removed has the inner turbine that looks like the one on this Geba brand Listed here at $115.72 (w/o gasket)



While the Hepu (listed here at $162.20) has a stamped steel impeller:



then there is Graf (listed here at 133.26), which I don't know how it looks.

So, which pump would you recommend and why? Any experiences good or bad with either brand of the V6 water pumps?

TIA,
MarkC