Have a read around on the Insulin forum (Diabetes Management / Medication / Insulin) as well maybe Susie. I got the impression from there that when people don't get on with basal, it's usually Lantus that they don't get on with, Levemir being perhaps preferable?
Dr B prefers Levemir because it doesn't go off so soon :
"WHY I NO LONGER USE LANTUS INSULIN
The package insert for Lantus insulin warns that it may lose potency 30 days after the stopper of the vial has been punctured, even if it is stored in the refrigerator. One would have to inject at least 30 units of this insulin daily in order for this to make sense economically, if we consider that there is another long-acting insulin, Levemir, that lasts twice as long"
I'm still on NPH, but tho unfashionable it seems to suit me. No breath of a hypo, ever (touch wood).
Lucy