A smaller pen would have been good on MDI; I was on a TDD of 30-35u and 1u would drop me between 2.5 and 3.3 (UK numbers) depending on the time of day. Correcting a BG of 7.5 wasn't really an option. It is those on low doses who are highly sensative to insulin that require this feature. For folks on the large doses it's obviously less of an issue.
The Animas pump I've been on for almost 48 hours does 0.05 unit increments. In other words, 1/20th units. I am officially in love with it already for that and several other reasons. I put in 4.35u for breakfast this morning
I agree with Funnygirl about the clicky problem, but a 0.25 u pen for the insulin sensative would be great; who amongst that group would ever whack in more that 15u of rapid in one go anyway?
Gary