| Cleo 90 is Smith's medicals form of an "all in one, straight in set." Inset is made by Unomedical and is distrubuted by Animas. I recommend you try them both. Cleo 90 is sold by Smith's and only Smith's, but you can order from them and use them with the Animas 1250. Inset is sold by Animas. Either set works with either pump, since they are standard. I use a Cozmo and use the Inset from Animas. It works. So don't buy the pump just based on what sets are availible, since MM is the only one that has their own special sets.
Cleo 90s are new on the market and just now availible. I've never tried it, but want to. I don't think you "set the speed" I think it just goes in based on how fast you push it down. Insets you just push the sides in and it flings in.
Personally, I love the Insets and have yet to have a problem or even an ounce of pain with them. | 
