Once upon a time I had a pair of Canton GLE60s, and I thought they sounded very nice on everything I played through them....
Until....
I recorded a band and mixed down the tapes through them. I made a master tape, and decided to audition my mix through other speakers. The sound changed at various friends' houses, in the car, etc. That was bad...I decided that the Cantons were the cause of my problem. I bought a pair of Spica TC-50s, and remixed the tapes..again...using them. I then re-auditioned my new mix in the same manner. This time, nothing was over- or under-mixed when auditioned on any other speakers that were available to me.
I continue to baby and listen to those TC-50s to the present day. I gave the Cantons to a friend of mine, and he uses them also to this day.