Nebido is a long-acting form of testosterone but it doesn't means that it will stay all the time in acceptable ranges for young youth man. I did two shot of this drug and i can say that after the first T level durning a month decreased from 7.5 ng/ml to 4.1. I did next shot 8 weeks after the first one but at the end of the cycle i felt all the symptoms of low T. In my opinion theres no possibility to avoid decreasing below 4.0 with nebido using it once for 2,5 -3month (even more). If someone could accept it then he can choose nebido but 4.0-5.0 for me is an accepcable minimum of t-level. It is good medicine but not for all. Everyone has his own range. For me the best is betwen 5,-7.5. Below that i feel lack of libido, depression etc
Sustanon? As nebido - it has upsides and downsides. For me it has beginning too strong and the end too weak. I think it has too much propionate and too litlle one long-acting ester. But i'm not pharmacist of course. Now I'm on Omnadren (quite the same stuff) 250mg / 16days . this is a new experience for me but i feel it is not bad option however the end isn't so good
I think the best injectable option is one shot a week with 80-90mg of enanthane or cyphionate but not everyone will accept such frequency of injections but this way you can avoid "downs and hills" as with Sustanon.
All the three options has advantages and downsides. nebido works great durning 1 month, practically doesn't aromatise, decreasing is slow but constant. Sustanon is very strong at the begining, weaker at the end, you have not to do a shoot as often as with cyphionate but weekly injection of En/Cp stabilizes your level of testosterone
My friend adviced me to do a shot of 90-100mg of Omnadren/ Sustanon for 8-9days. This is also an option if someone can buy Sustanon at reasonable price (Omnadren in my country is cheapest than bottle of water - ca 1Euro)
You can consider 1 shot of nebido/3 months and after 2 month reinforce it with some very light supplementation but nebido is an expencive option , you have to know it. One ampoule cost ca. 200Euro if i'm right
Sorry for my language skills but i'm not the son of Albion ;-)