+10 @Devildog 's suggestion for the CGM! If I’m remembering correctly, I started the Dexcom first and then the OmniPod, but they were relatively close together.
I’d ask them about the “screamers”! This is when the pod fails, for many reasons, and “screams” very loudly. This is the one you cannot stop from the PDM (Personal Diabetes Manager) … this one you have to turn (edited to add: the pod) over, (after you remove it of course) find a hole, and stick an open paperclip, or something similar, into it to get it to stop. Knowing where and how to do this, before you have to, would be a huge help. I’ve used an open paperclip, one of the turkey pins, and I’ve found a lancet works well too, to get the pod to stop “screaming”.
I love the OmniPod, but I have nothing to compare it to. I’ve worn it for about four years or so now. I sometimes think about switching, but I love the tubeless make up and the fact I can shower and swim with it.
I did find, initially, the pods didn’t stay on well for the three days I wear them. Early on I started using Skin Tac on my skin, then on the pod, let them set for a minute or so, then join them together. They stay on now with no problem and sometimes I find it difficult to remove them. Then, I use some adhesive remover to help ease it up.
If I think of anything else, I’ll repost.