What’s the Best Insulin Pump?

I get asked this question a lot while training patients to use insulin pumps. It is a reasonable question. You may be committing to a system you will use every day for years—and trusting it with your health and well-being.

Luckily, there is no single answer. Every pump I train on has real strengths and tradeoffs. The goal is not to find the pump with the longest feature list. It is to find the system that fits the way you want to live with diabetes.

Tandem T:slim and Mobi

These are excellent options for people who need to be in control. I like to refer to these as the “type A” pumps. If someone is stressed about their diabetes and needs to be hands on, all the time, these are ideal. The T:slim has a larger insulin reservoir than anything else I train on (300u) and the Mobi is great for tech savvy patients. They still has lots of automation built into them, but it leaves patients with the ability to be as involved as they want to be. One of my cousins kids has Type 1 and he's on a Tandem so he can disconnect his tubing when he's in football and wrestling, and it works great for him.

Sources: Tandem t:slim X2 and Tandem Mobi.

Omnipod 5

The basal rate is automated and you can't do very much, aside from change your glucose target, to affect it. I consider this the middle ground when it comes to hands-on control. You enter carbs when you bolus and you can give yourself corrections. The basal rate just does it's thing. It also has the huge selling point of being tubeless. If you're not a high school athlete, the ability to disconnect and reconnect your pump on a daily basis isn't nearly as big of a deal. Omnipod 5 also has the added bonus of being available at your local pharmacy. You don't have to wait for the mail to get next months supplies. It's such a big selling point that other pump manufacturers are developing tubeless and pharmacy-distributed options. Tandem has a tubeless Mobi wear option in development, but the company does not list a release date. Beta Bionics says Mint is expected to be fully commercialized by the end of the second quarter of 2027, subject to FDA clearance.

Sources: Omnipod 5, Omnipod pharmacy coverage, Tandem product pipeline, and Beta Bionics Mint timeline.

Beta Bionics iLet

This is what I consider the, “I'm going to pretend I don't have diabetes” pump. The iLet is best used by leaving it alone, aside from meal announcements. You tell it you're eating, but you just eyeball your meals. Whenever I run into patients who are burned out with the day-to-day management of diabetes, and they want fewer decisions, this is my first option. Automatic, self-adjusting basal rate, corrections, and boluses for breakfast, lunch, and dinner. HOWEVER, if someone needs to be in control of things, this system will drive them insane. If someone's looking to let something else do most of the lifting, this is an excellent fit.

Source: Beta Bionics iLet Bionic Pancreas.

So, which pump is best?

My favorite pump is the one that fits the patient best. The decision usually comes down to a few practical questions: Do you want tubing? How much insulin do you use? How involved do you want to be in dosing decisions? Do you want supplies through a pharmacy? Which CGM do you prefer? What will your insurance cover?

That conversation usually takes some time, and that is okay. Learning a new system is a real time investment. I would rather help someone think it through and get it right the first time than choose based on a single feature and regret it later.