Sound quality is excellent.. i'm still to try out the more professional and feature filled Ardour.. (for me feature filled most of the time means steep learning curve)
Recording guitar to comp results in a surprisingly low amount of white noise in Linux - Windows funny enough has much more white noise..
I tell u live recording artists are simply harsh...really good at what they do.. I'm very far from what i think is perfection...
But I'm having total fun doing this..