I had TC50's too, years ago. Owned them for over 12 years. Loved em! They are champs at imaging, but I've since owned even better monitor-sized speakers that image even better: Silverline SR17's. Of course you will pay alot more than your Spicas cost, but as far as bang4$ I haven't heard much better in that price range. The SR17's are head and shoulders above the Spicas in more ways than one. As far as what I gave them up for....I yearned for a more full range and went over to Klipsch Forte II floor standing horn-loaded speakers and also switched from SS to tubes at the same time. There was no turning back at that point. I tried listening to the TC50's again a few months later. They still imaged like champs, but left me yearning for the rest of the music/range I was hearing with the Forte II's. I've since moved on several times but have stuck with vintage Klipsch with tubes and really found my Nirvana in that combination.
Marco
Marco