The trouble is with any basal insulin - if its particular profile doesn't near as dammit match your own body's actual requirement you'll be stuffed - whatever insulin you use on MDI.
Humulin I - was on that after I became immune to porcine and had disastrous totally unpredictable hypos on the pillion of Pete's motorbikes and only by brute strength did he keep the bikes upright when that happened - and whilst driving a car myself as the crash barrier on the M42 can testify in two places - wrote off one company car and severely damaged another but TG no other cars or any other people affected by the two events - and I never was injured and only lost my licence for 12 months.
Lantus - highs, lows, stored pockets of it suddenly letting go with no warnings other than Oh **** I have hypo symptoms and wham - even many years later well after I got my first pump! Of course I tried splitting it not splitting it and changing timings etc etc etc ad infinitum. So I changed to twice daily
Levemir - Oh peace, perfect peace for years with only minor tweaks to timings and doses - but those made HUGE differences to my control and my BP and my A1c both appreciated it by that time! Best thing was, I could actually see the effects of ANY change within HOURS - incredible! - although of course, I always allowed it a few days to be convinced and actually say it our loud LOL Biddable is the right word as far as I'm concerned and it's the one I've always used to describe how it worked for me!
Now - when I see how many - some vastly different - different basal rates I REALLY need to swap between hour by hour during each 24 hours on the pump and see how little basal my body actually needs - I seriously wonder how the hell I managed to stay alive and functioning for all those decades previously!
Robin take an enlarged screenshot of the Levemir graph (see
http://www.diabetes-support.org.uk/info/?page_id=428) to show your nurse to explain to her how different it is to eg Lantus - the graph speaks for itself really. The length of action and the peak of it, depends on the dose per kilo of body weight - I took 14u in a morning on rising around 7am and then another 4u at 9.30 to 10pm at night to counter my 2am high and slightly later, low BG and last me through till 7am again. You'll be different of course - and I started off 12 hours apart and had to tweak timings and reduce/increase over a period until I eventually got there to what and where was best for me - but because the results were virtually instant (and you have to give it a whole week if not longer for the effects of Lantus to leave your body so you kind of have to ignore much of what happens in week 1- so I mean after that was over and done) it's much less tedious making changes and not so much of a mental mountain to climb. The disastrous changes also showed themselves quickly too - but I only gave them three days max trial if they seemed that way!