Geez guys, give it a break! This pump is one awesome piece of work and I am still happy as a pig in s*it that I decided to go with one on my system.
Mine has been running a year and yes, I have had to replace the seal. Not once, but twice. The first time they were not aware of the source of the problem yet. I have since put in a new improved seal and feel that Tom at Dolphin has been above board on taking care of everyone who has had a problem with this pump. Not only that, he has been honest about the source of the problem. What more could you want! This is not a perfect world, by any means, so don't expect perfection in every product you buy. (<i>DID I JUST SAY THAT!!!</i>)
I have a couple of 3/4" SS also and have had to replace motor's in both of them...one had this happen twice. Same story there though. They are standing up to their warranty claims and dealing with the source of their problem. In both Dolphin and SS case it is components purchased for construction not living up to claims my manufacturers.
Am I happy about these failures? Heck no!! But, I have come to realize that at least these guys are trying their best to resolve the problems and keep everybody happy with their product. That is really all I could ask of them. S*it happens! It's what we do afterwards that defines character.