So you want fast but not too fast?
Humalog should be the choice if you want it in and out quickly, no?
6-10IU is a large bolus? Get outta here. At least he upped his recommendation from 1-2IU max once per day, and only for "undersecreters", another made up theory.
I doubt you're very resistant... you're not shooting it all day long are you? So Palumbo's explanation for diminished effects wouldn't apply to you anyway.
Palumbo also made the "scientific" claim that over 10mcg of IGF would make you resistant within days... never mind the fact that a normal person produces like up to 10,000mcg each day and kids with growth disorders are prescribed several milligrams a day for years and it keeps working.
I don't know why you're not going hypo as easily now. Could be several reasons, better timing of the carbs, more food each day period, and maybe a little less sensitivity. Can't say.
Personally I made the mistake of downing 100 grams of quick carbs in conjunction with the shot when I used it maybe a decade ago. I would go hypo frequently after 1-2 hours. I think it's better to sip on the solution slowly. I just recently tried it again and can do 25IU no problem but I sip the carbs slowly over the next 2 hours.