Board Thread:Fun and Games/@comment-29176641-20161103150426/@comment-29176641-20170115175448

For Air Busters / Red Busters, is it better to do the 3 Step Gacha at 2100 Cat Food with a Guaranteed Uber or the 1500 CF without? 3 Step is more, but the Uber is guaranteed,  and I need that with my appauling luck.

Which is better?