We use the suro too. Hatched 5 out of 6 runner ducks last year. 6th died in shell. Managed 50% with guinea fowl.
Lower rate with chickens but they weren't our eggs, so unsure of the quality. Possibly too many eggs too.
0 out of 2 for geese - I don't think it could cope with the large eggs.
No problems with reliability so far and we use it in a heated room, so lack of insulation not a problem. Only a hobby too, so not that critical.
That said, having read the earlier comments, will probably buy a brinsea if this packs up.