I agree with that. I emailed cal aqua directly, they will sell to you only if GLA is out of stock. I have had the Cal Aqua ones before. I did like them, but they do push water towards the soil. If you situated them right they don't, but they slide back down and do it again.
The aquatic magic ones interest me because its small and it looks like it points upwards. I know the cal aqua inflow is good, and the aquatic magic looks small with a nice flow upward.
It just depends on how you want to run it. I see benefits to all of different types, just matters what you want to do.