IMO, it really depends on how you want to set-up tank circulation. If the amount of water running through your sump is sufficient, then using sea swirls is probably the best way to go. If it is not, then adding wave makers may be the better option.
For example, in my new tank that is still in the design phase, I plan to use my current sump and return pumps. However, because the new tank will be larger than the old tank, the total tank circulation will not be enough for my sps. Therefore, additional power heads on a wavemaker will allow me to increase circulation without trying to drive too much water through the sump. This is also advantageous because I plan to have all of the returns from the sump exit at mid-height behind the rocks. The extra power heads on the wavemaker will supply all of the circulation for the top half of the tank.