You guys pick on poor Pattykins alot. I mean, he does have a life and job and such. So in defense of Pat he will get here eventually.
As for the original question about insertion sites. I have had so many random issues with using my abdomen and sometimes love handles I have been favoring my upper arms for both my CGM and Infusion Site. I am relatively thin, but there is some padding that needs to go away. The upper arm works great for me and there are times when I first moved up there I felt like the absorption was really good.
I do use the angled insertion set from Animas, not the 90 degree because those and I never got along due to my thinness.
Back to the arm though. A few things to think about when and if you do this. The first is the length of your tubing. If you are using the shorter length of tubing and you are a taller person, I am about 6 foot or so chances are the shorter tubing might make it hard to put the pump in your pocket. For a while until I was able to order longer tubing I had my pump climbed to the belt. There will come a time when you accidentally hit muscle, it does smart a little but I normally was fine with the where the site was. Usually, once the initial shock goes away its fine although sometimes you will "feel" your Bolus' as they enter.
Also if you go with the arms whether you use a serter or not I would start with going to the side in which your strong hand would do the placement of the site. So if you are right handed, I would put the site on the left hand side. This way you get used to what you need to do before having to use your "weak" hand for inserting.
Also, the last thing to think about is the tubing angle. Depending on which infusion set you use you want to make sure the tubing is pointing up your arm so it can drop off to the side of your body, again this gives you a little more tube length if you use the shorter tubing. Also, it will limit the amount of time you might accidentally pull the site out when you are taking off shirts. The first few months I would accidentally rip a site out because the t-shirt got caught on the top of the infusion site. Granted it was a rarity. The site I use is usually somewhere about an inch from the shoulder to avoid the bone and such. It really is great, and I am glad I manned up and did it. Also, one other thing to think about is hair. If you do have some hair on the upper arm, I might suggest removing it, this way things stick better.
I am glad I moved to my arms, since moving to the arms, I have had little to no infections or irritated sites. It seems when I wander back to the abdomen and love handles to give my arms rest, that is when I have issues. Any other questions please ask.