I kind of agree especially with the snob aspect, but...the trouble with "hi-fidelity" is there is no comparison implied. Literally anything can be called hi-fidelity, and has been over the years. Hi-fidelity compared to...a piece of chewing gum? On the other hand "high end" implies a favourable comparison to other lesser grade audio gear. You can’t really call something high end if it's in the lower half of all quality levels. I do like hi-fidelity though. It’s nice.