while by no means cheap or good value, gelato blue seems to offer a wider variety of flavours compared to gelatissimo and the customerservicehere seems to be a notch better at their competitors in newtown (perhaps with exception to cow & the moon, but that's in enmore, isn't it?). in terms of the ice cream, sorbet and gelato themselves, the ones we ordered seemed to taste pretty good but we can't say how they compare with other ice creameries or gelaterie.
to its credit, gelato blue has a groovy upper-floor seating area, where you can enjoy conversation, coffee and ice cream while looking out to king street (though we have no idea why you would want to do that; you simply can).
on balance, we would consider coming back to gelato blue and could recommend this to our friends.