Surge device, closed loop or bigger powerheads????????

[chwkreefer]

I have a 150 gallon tank (60" x 24" x 24"). I have mostly sps but I'm not happy with the flow in the tank. My return is a Mag18 and I have a number of powerheads, but there isn't enough flow, turbulence etc.

I'm looking for recommendations to improve flow while keeping costs down. Which would you recommend?

1) Surge device (easy diy project, cheap, noisy, bubbles)
2) Closed loop (more expensive to get a decent pump)
3) Some Seio powerheads (price is good, more powerheads)

If anyone has some experiences for the pros/cons that they could share I would appreciate it. To be honest, at present I'm thinking of getting a couple of Seio 1100's or possibly the 1500's, but I want to think this through first. Your thoughts are appreciated.

Bill