I think those are good horns. I had a vintage Vito alto for a while, but mine was a cheaper one that wasn't really sturdy. I think the ergos on those need a bit of getting used to. But they are nice blowing horns with a good vibe to the sound.
I like those vintage American horns, even though I play the YAS23 also now. The Yamaha is more neutral sounding (less personality) to me, but the older student models are built like a tank which I like. And I do prefer the modern ergonomics.