Make your wrought iron curtain rods really stand out by using a two inch diameter pole from the Iron Art by Orion Collection. The two inch scale is great for really wide windows, or high windows ten or eleven feet from floor level where a smaller scale treatment may look out of perspective. Just keep in mind that metal rods are pretty heavy and large scale poles may require additional support brackets. The hollow core construction of the Iron Art rods means they're not as heavy as solid rods, but a bracket every four linear feet is required for maximum stability.
The Rope style rod is very popular. The flowing design really adds impact to your overall window treatment. You can continue the look by using the twisted ring option if you're hanging pinch-pleat draperies with pins. Or, you can stitch the eyelet of the ring into the header of your flat panel drapery. For rod pocket installations, the pole is mostly hidden, so a standard round curtain rod would be a good choice. Just make certain that your pocket has sufficient depth for a two inch diameter pole.
For a more modern or contemporary feeling, you may want to consider the square pole with coordinating square rings. Finished in white or pewter with an understated finial design, these rods will look great with your upscale design.