I prefer testosterone undecanoate.
Just did a blood test 34 days after injection, my T level was 1427 ng/dl and falling. It will get to ~600 ng/dl if I wait 12 weeks.
Steady state is such a deceptive misnomer. Nothing is actually steady state, no matter what you use you will get peaks and troughs. What seems most important is to limit the frequency vs highests of the peaks.
Frequent peaks that aren't that high are good, big peaks that don't occur often are good. Big peaks that occur frequently give the most side effects.
Meaning daily injection of something like T-C gives frequent smaller peaks, every 10 weeks of Nebido give one big peak that falls off gradually every 10 weeks. Both seem to work equally well.
Worst is to give a bigger injection of T-C every 2 weeks. You give big peaks too often.
My only objections to testosterone undecanoate are once I inject there is no way to lower my T level, I am committed for 10-12 weeks. (I could always raise if at any time if I wanted to). And deep IM in glute isn't the easies site to reach.