Anyone use Magnaflow mufflers? What do you think?

i had a huge one on my truck i really liked the sound. quiet inside at idl and cruise but a nice growl when you stepped on it. i swore i was putting them on my dart but got a good deal on ultra flos and went with them instead. flowmasters suck. i learned my leson with them. annoying. super turbos are nice but not built as well as ultra flo, magnaflow or flowmasters.

who makes the ultra flow ?? never heard of them,,

also seen a comerical on speed channel for hush power by flow master any one heard these ??