The question wasn't to me, but I'll take the liberty of weighing in.
I've used several models of tubed pumps since 1980, and I find it hard not to wax evangelical about the Omnipod. I like putting on a pod and basically forgetting I'm on a pump for three days, which is not so easy with a tubed pump -- it's always physically there: you have to find a place for it in your clothing or juggle it with other things in your hands. I do not find the pod bulky or obvious under clothing, although I also do not wear tightly form-fitting clothes. I consider it weightless.
The PDM, on the other hand, is a bit clunky, but I do not have to carry it around with me all day so this is not an issue personally. In the hand it could be mistaken for a bulky phone. The coming generation (late 2017?) will replace the PDM with a locked-down Android device.
If you go somewhere without your PDM, you will still receive your basal but you won’t be able to bolus or adjust your basals. You’re unlikely to go somewhere without your Medtronic.
I find I have more infusion sites to choose from than I did with tubed pumps. Some people puts pods on their calves, chest, upper buttocks, basically wherever there’s some flesh they won’t be sitting on. Maybe people also use those places with tubed sets now (although trying to picture getting dressed with a tubed set on my arm always makes me picture Cirque du Soleil). Different people have comfort or absorption issues in different places -- I've had more "third day highs" when the pod is on an arm -- but I also experienced such things when I used tubed pumps. When I used tubed pumps, to economize I would push my sets longer than recommended, and therefore experienced occasional site infections and years later have various lumps and bumps. I appreciate that you cannot extend a pod past its three days; this is better for my body.
I have not, in more than half a year, experienced any of the pod failures or defective pods others have reported. I don’t know if that’s because quality is improving or I’ve been lucky. I've had a handful of pods that were uncomfortable enough that I had to take them off early, but Omnipod will replace any pod that you have to remove in the first 36 hours because of discomfort, unexplained high BGs, or various other "adverse events."
I like that the pod is waterproof, so I can shower or swim and still receive insulin. This is a big advantage for me because, even with a bolus to cover the unhooked period, I always had to stabilize my sugars after disconnecting from my tubing even for a short time.
Speaking of swimming, and other less-dressed activities, chances are the pod will be visible, which may or may not be a consideration. Then again, I found even disconnected Silhouettes could draw attention.
Some people find sleeping directly on the pod can be uncomfortable or bends the cannula; others report sleeping on them with no problem. Depending on your body type, these may be concerns with tubed infusion sets as well. Personally, I sleep on the pod-free side and enjoy no longer waking up multiple times every night to unwind myself from tubing.
Omnipod offers a money-back 90-day trial, so if you're not happy, it'll be easy to switch back.