While the pasta is cooking, prepare the dressing. In a food processor or blender (I used my small Twister jar on the Blendtec) combine the apple cider vinegar, white wine vinegar, sugar, (adjust -- more or less to personal preference, we like a less sweet dressing and use about 2 tablespoons) paprika, and onion powder. Pulse or blend for about 10 seconds. Slowly add in the oil and pulse until just combined. Stir in the poppyseeds. IF you don't have a blender or food processor you can combine the ingredients in a bowl or mason jar and whisk (or shake jar) vigorously.
Alternatively, you can candy the pecans if desired. Check the link in the last paragraph of the blog text for how to candy pecans. *UPDATE: we've found we like this salad even more with the pecans coarsely chopped- you'll get more in each bite! :)
Top the salad with the pecans and (if desired) feta cheese.
This salad (like most) aren't very great leftover. If you aren't eating this immediately, keep the ingredients separate from the dressing and only toss with the dressing right before eating. Top with pecans and feta after dressing the salad.