I have both the 1602 and the 1588. I have great hatches in the 1588. The 1602 routinely spikes temperatures and kills everything inside. It is worth the extra money to get a 1588. I have run mine continuously since March and it has worked great. This is season two hatching in it and it has been wonderful. To add to the greatness, when I had a problem with the power supply cord and called GFQ, they put a replacement part in the mail that day with no charge. The bator was up and running within three days. The customer service was excellent!