Thanks! It's disappointing, but at least I definitely know how to take care of him now, even if he doesn't go back OTJ (but I sure hope he does!).
I wish I could answer your question about how to proceed given Felix's blood glucose level, but I just don't feel like enough of an expert. I *personally* would be nervous about giving a unit to a kitty whose pre-shot numbers were in the low to mid 100s if I didn't have a lot of past data about his response to insulin--but that doesn't necessarily mean anything for you! You could start a new thread in the Lantus forum and ask for suggestions specifically about his numbers (rather than about comparing meters). When you create the thread, you'll see an option to add a prefix--if you use the question mark one, people will know you have a question, and hopefully one of the more experienced folks will be around to answer.