OmniPod “Auto Mode” has done better for me than my last Tandem’s Basal- or Bolus-IQ. To be fair, my t:slim warranty ended before the most recent firmware update.
Neither Pod nor t:slim is as easy to fill (with insulin) as Medtronic, but I think Pods are a bit easier. Biggest Pod advantages are no tubing and 100% waterproof. Biggest disadvantages are small reservoir (200u, max) and Pod thickness (buttocks sites really don’t work if you plan to sit down in the next 72hours!) I find the Pod packaging (Pod+syringe+needle all in a package slightly larger than a deck-of-cards) to be much simpler.
I’ve not had problem with site adhesion from either company. Though I’ve noticed a decline in quality of everyone’s sites ever since Medtronic started the whole industry using ONLY their own proprietary sites and tubing, OmniPod seems to have kept the highest quality (IMHO. I’ve used OmniPod 2nd-gen, Pod5, Medtronic 630 briefly and 2 generations of Tandem.) I’ve had fewest site infections using Pods.
Tho I’m an enthusiastic Podder, I should point out that the lack of tubing or inability to temporarily disconnect means that you’ll need to plan your jacuzzi days for arm sites to avoid cooking/expanding the insulin in the hot water.
Good luck deciding–there’s a lot of exciting features out there!