go to sumppumpsdirect.com and get the Storm Pro BA33M. it is an awesome pump with a great switch. the Zoeller is good to. I have both in my sump. I prefer the Storm Pro because it is smaller, stainless steel, quieter, and more effeicient -- which means it will run off my battery powered UPS longer than the Zoeller will.

my sump gets water softener discharge (heavy salts) and I put a toilet bleach tablet in it to keep it from sliming over (from the humidifier discharge I think). these harsh conditions have had no effect on the Storm Pro. The Zoeller is starting to rust pretty bad although it's built like a tank so I imagine it'll keeping going for many many years.