You asked why I preferred Lev. Most important, Neko liked it better. She occasionally walked away during the Lantus shot, stayed still and purred through the Lev one. Second reason I liked it better was predictability. She didn’t drop as fast (so less fast drop caused bounces), and I could sleep longer between tests at night. And serendipity, her nadir moved to about the time I got up four times a week for my workout. So I could test, and boost her with food if needed, or put out the auto-feeder to keep her safe. Since her onset was later, a couple benefits from that too. Onset was +5. I had five hours after shot time to get food into her on the rare times she was off her food. Second nice thing, I could test, feed shoot, and go out for dinner or a movie and be back by onset. The down side, the later onset meant I was often in bed before then and had to learn other ways to predict her cycles.