I auditioned the Magico A3s, have listened to the Perspectives numerous times including in my home, and have only heard the Spendors at an audio show (where they frankly shocked me how good they sounded).
They are certainly different sounding speakers. Perhaps the Spendors sound more like the Magicos than the Joseph speakers.
The Magicos give a heck of a lot for the money. Probably the most "detailed/transparent" sounding, and almost full range!
The Joseph speakers, for me, are about a magical tone - even more free of grain, more pure sounding overall, than the Magicos. If you like that special thing the JA speakers do well, it's hard to forget it, and I much prefer the Perspectives over the Magicos. The Perspectives have excellent, deep, quick bass for their size and do sound punchy. But I'd be wary about driving them with a lower powered tube amp. Though the impedance etc does supposedly make them tube amp friendly, I think they need some juice to make them get up and go. Though in the crazy world of amps/speakers, it could be that your amp would work.
Sounds like maybe the Magicos are your ticket, though, especially since you heard and liked them.