We must have different formulas. My formula would have said:
Juarez-- Excellent 2B/3B against LHP, solid bench utility player against RHP. Plays everyday against LHP and can play fulltime to cover injuries. Well worth rostering and under the right circumstances I'd even arb him twice.
Infante-- Dave Magadan-lite guy with a .360-ish OBP but marginal power, speed and defense. Don't think I'd roster him but if I happened to need both a RF and a leadoff hitter I'd take a look. More valuable in a park that kills power but allows singles and doubles (OKC, SF, maybe KC).
I'll be interested to see what they do for you.