We had the Atwood 2000. Water
got into it and rusted the whole insides in a year. The water
was never above about 1/4 way up the pump, so the water must have entered in through the shaft seal
I wouldn't touch anything by Rule.
Had a Shurflo that lasted 15yrs, but they don't make that model anymore. Also had a good Jabsco
submersible, but they don't make them anymore either.
Frankly, I don't see that much daylight between pumps anymore. They are all made in China
and all much less robust now than they used to be.
Rule is the only one that is guaranteed to stop working quickly. All others will hang in there a bit longer, but not like they used to.
Note: I am talking about plastic-cased submersible pumps in the 1500-2500gpm range.
And, having dissed Rule, I have to admit that we have a 1990's era Rule 500 pump installed in the dinghy
for the past 9 years and it still works fine even though it has sat out in the snow for 5 New England
winters and pumps the dinghy
multiple times a day for the past 9 years.
Turns out it is the best bilge pump
we ever had, but all our other experiences with Rule products and pumps has been crap.