I switched from insulin syringes to pens! I use the blue pen for my Humilin N and my pink pen for my Humolog. I haven't noticed a huge change in the comfort level from syringes to pens, though I pens are a lot shorter (well, only 2mm, but it seems like a lot [I used 6mm syringes and am now using 4mm pen needles])
I like the look of pens way better than syringes it is more discreet which I really like. People don't automatically assume you are shooting up drugs when they say you with a pen, unlike when you are using a syringe :)












