Would you mind explaining why Ecotech is worth it in a long run?
I can only speak of my experience with my pumps, but with that being said:
1. Reliability of the units. Jebao might work great for 6 months, but mine started acting up and quitting after about that time. Had to buy new replacements because I couldn't find parts. If you buy 2 or 3 cheaper units, why not just spend the same amount of money up front on a better unit that will last? I have yet to have any issues with a Vortech powerhead.
2. Flexibility / Expansion Options. Want to expand to a bigger tank? You can hook up another Vortech pump to your existing setup and have them communicate seamlessly. Everything I have heard of Jebao's wireless communication is that it is shotty at best.
3. Number of flow modes. The number of different modes that can be run on the Vortech is amazing. Doing a water change? Run on Nutrient Transport Mode to kick up detritus. Have soft corals that like mediocre continuous flow? Turn on lagoon mode. Have SPS that like random strong flow? Turn on Reef Crest mode. All modes can have a maximum speed programmed in to customize your flow options to your specific tank.
4. Customer service. I have had excellent customer service from them if I had any questions. Some opinions vary, but I can only comment on my experiences.
This is not to say that the Koralia or Jebao pumps won't service your needs. I have had Koralia's and Jebao pumps in the past and seemed to work fine for awhile, but I always ended up replacing them. I made the decision to go with top quality equipment for my new tank, and can see (at least in part) why they are more expensive. If your budget can incorporate the Vortech pump, then get the Vortech pump, if it cannot, then get the Jebao.