I had true dual flowmaster 40 series delta flows before I got my LT's and I liked it a lot. Not too loud at idle and pretty loud at WOT. Now with the LT's and ORY I've got a single delta flow out before the rear tire. I love the way it sounds..minus the exhaust leaks I still need to fix. Most would say it's raspy but I like it. I have been planning on going to a 5x14 round magnaflow same exit location but just haven't done it yet.
Edit: A lot of people I know say the corsa is awesome but most people don't have the cash to drop on them. They are apparently quite pricey.