slinslin
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Zizic isn't as big as Zubac, but he's putting up incredible production for a 19-year-old in the Adriatic league. It might be a smart move for the Suns to use both their late 1st and early 2nd on draft-and-stash bigs and see who develops. There is an abundance of foreign bigs with potential this year. (assuming they enter the draft)
Zizic, Zubac would be great picks at 28 and 33. I would even pick both but I don't think they are great draft and stash candidates.
Bogdan was more ready to contribute on top european teams when drafted. Zizic and Zubac are talents, they are unlikely to get lots of playing time on a european top team if the Suns draft them so you might just as well bring them over and develop them in practice.
Like I said European Centers in the late first round or early 2nd have been pretty good value picks, you can't do much wrong there.