My system probably barely qualifies as Mid Fi, IMHO, but it blows me away when I listen to the music I love.
I know other people who own (multi) Thousand dollar Bose systems and by virtue of this; they believe theirs is Hi Fi High Quality......
When they hear my system and realize I paid $250 for my Heresies; my receiver was free, my sub was free and my surrounds cost me $4 each at the thrift store, they are usually left picking their jaw up off of the floor. (Just added a KV3 center yesterday; package deal that comes out to about $30 per speaker... Woo Hoo!!!)
Then I switch to 2 channel audio and play whatever music they like and they once again need to pick up their jaw...... [H]
The other factor is; how much do you really ENJOY what you have? I have promedia 2.1's in the bedroom and if I am not jamming in the living room, I am jamming in the bedroom.... I love listening to music, and now that I listen to it at a relatively quality, realistic level.... there is no turning back..... ever.
If I had a $50,000 system but never used it; what is the point? I use my audio equipment because I love my music, and therefore I believe my musical listening experience/ home theater exp is more valuable than someone who has super high end, but does not appreciate it.......
My .02.....