Can I give a view from a VEO user please?
I've been using the VEO since July, yes you have the tubing and Canula as separate parts, but this is not too much of a problem, especially if you put the canula in your leg then clip the pump onto your trouser waist band. You don't have to do any maths as the pump has a built in Bolus wizard, which (when combined with the Bayer Contour Link meter, free with the pump) means that you only have to add in your Carb quantities at meal times. If you're running high, the pump will ask if you want to do a correction dose to bring you back down to your target range, and as has been posted above, if you use CGM (I don't) and your BGs start falling rapidly, the pump will suspend delivery for up to 2 hours and give either an audible warning or it will vibrate.
Battery wise, I have only had to change the battery twice since having the pump, will need to change it next week but they (batteries) are supplied by Medtronic so I do not need to worry about the cost of them for now (got a year's worth with the pump.)
The infusion sets (Canula and tubing) are not uncomfortable and can be changed in as little as a couple of minutes. There are three types that you can get, the Silhouette, the MIO and the quick set. I started with the Mios but found the adhesive to be slightly too weak for me (I'm rather active at work) so have switched to the Quick sets that also have a longer tubing than the Mio.
Overall I have not had any problems with my VEO since having it, and have even improved my HbA1c from 9.8% to 7.6% whilst being on it. I wouldn't give it up for anything.