I was VERY skeptical of the jebao pumps initially, but after using a couple of WP 40's for several months I'd never buy another brand of powerhead, except maybe some maxijets for utility purposes
I've owned many Koralia's, Tunze's and Eco Techs.
For price / performance they can't be beat. Even just for performance it's tricky then you factor in price its a no brainer imo.