Well having compared my two WP40s to a pair of Tunze 6105 on a 7096 controller I have come to this conclusion:
A) The tunze offer a better flow, is stronger (not by much mind you), quieter, has titanium shaft (compared to ceramic), is smaller, and the magnets are ridiculous.
B) The WP40 at $260 or more cheaper is a steal of a deal. Yes I like the Tunzes better, and no if I were on a budget I would get the WP40 any day of the week.
Enjoy your pumps guys/gals it is worth every penny of it. I think the only issue I have with the WP40 was the power cord died (lucky I am into computers and had a spare), and the night sensor only works if there is very little ambient light. If completely dark the darn thing runs in what ever setting you have it set to.