I've ran stock injectors, 565cc, 800cc, 1300cc, and now 1250cc. There was never any trouble getting it idling with any of them. As far as dispersion, most tuners I've talked to would rather have ID injectors than stock.
I never said you should run injectors 10 times larger than you need, just that it's better to go on the larger side. For one, if you're constantly running over 90% IDC you're going to damage your injectors. Secondly, if you have a boost control malfunction and accidentally overboost suddenly, you're going to want to have spare injector to be able to keep fueling the engine, otherwise it'll go extremely lean and damage the engine.