I think the opinions you're asking for are both a matter of preference. Everyone that has commented on either exhaust liked them.
Apart from everything else... If you're really torn, go with the cheaper one
I have a magnaflow on my C5 and like it for all the same reasons that people like the corsa.. Great looks, great full throttle sound and no drone.
I have a 2009 Z06 and considering installing a little more aggresive exhaust. I have been looking at the Corsa exhaust. I don't want any thing too loud but want more sound than my stock system. Any comments
I was in your exact situation a year ago with my '00 C5. As most have stated, it's all about preference (and cost). I didn't want anything too loud or overbearing to my neighbours when I drive up my quiet street. However I did want a nice roar when I fired her up and an impressive 'growl' when I opened her up. I ended up going with with LG headers and Magnaflow combo system (ordered and installed thru Manny). Couldn't be happier. Check out the sounds of various configs online (e.g. YouTube) to get some ideas of what you'll end up with. Good luck.got some prices from manny do i go magnaflow or corsa on 07 base c6