Picked up a new WP-25 yesterday from a local reefer for $70. So far I'm loving all the different settings and how small it is (not to mention I saved around $200 by not buying the mp10!). Still trying to fine tune it so that it creates just enough flow around the rockwork and sandbed, but I have a feeling I will constantly be tinkering with it.
The light sensor actually works really well as it turns on and off with ambient light as opposed to light from my fixture. The living room where my tank is is very well lit so the WP-25 will pretty much be in sync with the daylight.
Right now I have the WP-25 behind a rock wall pointed at the rocks (trying to get more varied flow around the rocks which get covered with cyano usually a day or so after I clean it all off), but I don't really notice any difference from before, when I only had a Hydor 1050. The wave modes seem cool but I only have a 60g cube so the effect is not as nice as in a long tank, so I have it on Else Mode. Any thoughts as to placement? Much appreciated.