So: My two cents.
If your incubator is maintaining an internal temperature of 88 degrees and you are using moist substrate/or water only: and the container is well sealed: humidity will = 100% and thus either method works.
I don't bother my eggs except for checking them on a weekly/biweekly basis to discard 'bad' eggs or every 2-3 days near hatch date to do an air exchange. Misting or any other activity on a daily basis to disturb the eggs would be bad due to the related temperature fluctuations.
X-Rays are cool, but, don't expect them to forecast lay date. Females can and do withhold eggs until they are 'ready' and even large follicles are no guarantee that they turn into eggs or do not get reabsorbed and/or slug out on lay. Females will lay when they are prepared. Do continue to mate the female to the male until the eggs are physically in-hand.
That Exo-Terra incubator in the picture is notorious for having unstable temperatures due to poor electronics. People say that some stop working randomly and others say they heat/cool incorrectly after a period of time. I would never use one of those incubators. Building an incubator around a reliable proportional thermostat with a heat source is still your best bet. There are many posts in the forums regarding great builds. But, if you are feeling lucky...maybe your unit will be the one that works properly.
Best of luck!
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