Oh, I wish I'd seen this sooner. Glad you have 6 good eggs going!
I have a brinsea mini advance. I actually set eggs 6 days ago and have it going at my son's preschool. I've been very happy with it.
I even had something go wrong with it and had to send it back to Brinsea for repairs. They were great to work with, and I've had two successful hatches since then. The first one was SHIPPED EGGS, and I had 6/7 eggs hatch. The 7th was fully formed, but never hatched. The second hatch, I had 5/7 hatch. Of the duds, one wasn't fertile and one died about 6-7 days in. One day I saw it wiggling around, and the next it was gone.
I'm dying to candle to see how my latest batch is going, but I think it'd be really hard at a busy preschool. :-/