I have had numerous hatching issues using a Forced Air Hova Bator 1602 with turner for incubation and a Still Air for Hatching. I have bought more hygrometers and calibrated them, bought instant read thermometers. I am frustrated. Thinking of upgrading to an "intermediate" bator. I was thinking Brinsea, but what other models are out there in the under $500 range that are good, also easy to use.