I, too, am happy with Maxi Jets.
I try to change out all pumps every 18 months or so. I stagger the schedule so, I do not have to change all pumps at once ($$). The reason I do this is an experience I had about 5 years ago.
A pump shorted and the electrical line to the pump body became exposed. The salt water corroded the line and leeched iron, copper and all sorts of unwanted chemicals into the tank. While the fish were fine, corals, coralline and many inverts slowly (and not so slowly) perished.
I could not for the life of me figure out the problem until I emptied the sump and found the bad pump.
While I realize that this may be overreactive, I've seen how damaging a bad pump can be.
I've been using Maxi's in my tank for circulation via my wavemaker and have been pretty satisfied. Reasonably priced and pretty effective.
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