I'm a Jebao convert, myself, and I've got 6 Wp-25s. They are only $50 on Amazon. And, with this wavemaker (http://www.joejaworski.com/jebao/), they are the bomb! In contrast, I also have two Vortech Mp10s, and I paid nearly $400 each for them (3 months after I bought them they lowered the price by $100!).
All of my Jebaos are still running after 8 months to 1.5 years, and I couldn't happier with them. They do appear to lose some power over time, but if I only get a year out of them, well, then I'll get new ones every year. I could buy new Jebaos every year for 6 years before I ended up paying as much as I would for a new Ecotech. And.....my Ecotech Mp10s are noisy as h@ll....but I could get the quiet drive driver for........another $50.