All the cheap
switches and pumps are cheap
for a reason. They look like they all come from the same Chinese factory with different names.
I have a wood boat with 5 WT bulkheads and 6 separate bilge areas. Other than very slight seepage all my bilge water
comes from wash downs. In other words I don't use the pumps very often, sometimes for months.
All the 1 piece pump and float switches I have tried fail in about a year. Either the pump sticks on or off.
The only switches that seem to work for years are Lovett pumps or those switches that are are either a float inside a clear plastic tube and the switches that work by pressure. See pics.
To me the warranty is meaningless unless the dealer is going to come out and change out the pump. I'm 67 and come from the days when a bilge pump
and switch would last 10+ years.
I have gone back to Lovett. I have one that is 30 years old.