Personally, I would go with a Carsound catalytic converter, made by Magnaflow. I've read the quality is slightly better than Catco. Price wise it's about the same, $50 and less on eBay.
My preference on the rest of the cat-back would include a SS Magnapack resonator 2" in/out, 24" body length P/N: 14503 and a SS Magnaflow universal 2" in/out centered 5" x 8" oval body muffler P/N: 14214. This is the setup I will be going with in the near future. The best price I've had quoted so far on that muffler, within Canada, is $103 CAN/$79 US excluding taxes and shipping.
I'm not interested in any fancy or wide-mouth tips to draw attention to a less than impressive looking car so maintaining the stock look with the 2" outlet universal muffler is exactly what I want. The reason for choosing, well all, Magnaflow components partially has to do with their lower cost compared to other leading brands. The other aspect is that Magnaflow mufflers and resonators generally seem to provide the best sound/tone quality based on a high percentage of NF Member recommendations and
carreview.com's ratings.
It's always best to search Google for products you're in the market for, such as Mandrel bent pipes, eg. combination J and U one piece units, or mufflers, to find the best prices from online dealers. Only until I do that do I compare prices I find on eBay.