Not to answer a question with a question but have you given consideration on how much equipment you are willing to have within your new display? Visually speaking? Do you have any limits or have you factored in coral types, potential growth, over the years and the side effects they will have on flow? New tank vs 5 to 10 year mature tank are different.
You already know this I'm sure but:
Gyres will blanket the surface of the display. Various sizes to get surface spread and power to reach the other end. Connect two and alternate and you can simulate sway, left, right, in, outbound tides. The key isn't short pulses but rather longer durational flow pattern to hit the opposite side, pause, then the other side kicks in and repeats. Can also adjust paddles, reverse a side, or both sides, etc.
All power heads will vary on their spread. Some will have higher and wider angles of attack vs some that are more narrow focused. Some will not reach the opposite side. Some will reach. The hobbyist really has to pay attention to this because it may not work left to right in most cases but could be better suited back to front. Neptune WAV's come to mind working great in this fashion (back wall to front).
Closed loops are also a viable option. Use of random flow ends will also help but the pump used needs to be properly sized. The only challenge with closed loops is that you are sort of stuck with your original placement. That is really the only thing I don't like about them.
All things considered flow and biome are probably the two most important pieces of the puzzle for long term success. Flow today, new tank, is going to be different as each day passes with coral growth or hobbyist change. Spending that time up front to really toss around ideas, visualize placement, maintenance, and cost will go a long way.
Oh - and height of tank can also be something to consider.