I have tried NovoRapid, Humalog and Fiasp.
For me, NovoRapid was the most predictable.
Humalog was the s-l-o-w-e-s-t
Fiasp is still the faster after more than 2 years but it took a bit of taming and is very challenging if over 10mmol/l.
I have heard of some people who use a Fiasp most of the time but use something else (e.g. Humalog) when their levels get high.
But, we are definitely all different and find insulin speeds are very personal.
For me, NovoRapid was the most predictable.
Humalog was the s-l-o-w-e-s-t
Fiasp is still the faster after more than 2 years but it took a bit of taming and is very challenging if over 10mmol/l.
I have heard of some people who use a Fiasp most of the time but use something else (e.g. Humalog) when their levels get high.
But, we are definitely all different and find insulin speeds are very personal.