venturi valve or beckett injector???

[Quinster]

I will re-word the question now, after speaking to acrylic city...
Who has the expert (or just educated) opinion on which system is better...I am running a 180G 1/3 full of live rock, 2" of substrate (crushed coral and aragonite), 50 G sump, 2 250W 10,000k MH, 6 55W 24" attinic, right now there are 10 fish with a small coral load (some day to get bigger)...just want to know what others think!