Hydor Powerheads - Difference in models?

[razord]

Hello,
I'm wondering what everyone's thoughts are on the difference between the Hydor Koralia Evolution and the third generation?


Reason I ask is I just bought a third generation and wanted to add a second powerhead and notices the Evolution is much cheaper. I'm wondering if its a lesser product or just rated for less movement? The second one that I'd be buying doesn't need to be as strong, but I don't want to buy it if it's not good.

Thanks!

 

[GimpyFin]

The third gen is just the newest version. (Koralia, Koralia evolution, Koralia 3rd gen.) I have about 3-4 of the evolutions I kept off my old tank and I use them for mixing water now. They're good powerheads for as inexpensive as they are.