Obviously ones goals and past exerience comes into play. Most of the huge guys I know take between 2-8g test per week. Alot of guys many look upto on the forums (that I have spoken to) usually tell me about 2-3g test then you have an anabolic (deca, eq) at say 1g and maybe an oral or other injectable. Although lots take tren at fairly high doses with the test too (500mg-2g).
I know guys who hate test and others who only run test only (with gh and slin). Everyone is different. Many think test is king and I understand why they say that. Me personally I think on a mg/mg basis test is not great. 1g deca is superior to test for muscle building imo. 1g of most things is superior to test imo. 500mg tren alone will create alot more results than 1g test imo. However I think there should always be a test base in most cycles.
I know alot of guys who never run test... many use masteron for libido advancement. These guys use alot of npp, tren, primo, eq etc. They tend to look extremely lean most of the year. Sure diet dictates everything. But for many without the blockers high test can give a certain look... think hulk hogan... big but smooth.
Again everyone is different. I know some guys who up their test when they want to get leaner... it will do that for most under certain circumstances.
I don't like high test that much. I have recently been on over 1g test per week and it makes me tired, brings about estrogenic sides and overall not the best muscle builder for me. I have lowered my dose to 500mg and 700mg npp and will continue with that for the next 6 weeks or so. I plan to blast on 750mg test and 1.2g deca (maybe even 500mg and 1.5g) for my following blast and to help gain the size I want. I know many hate deca but I love it.
I personally believe low-moderate doses of various compounds can be hugely effective whilst minimizing the potential side effects. I think most who think test is king have never actually done a cycle without it and experimented like some do. I think test is a must for my future cycles but I will keep it at 200-750mg. To give an indication I think great cycles for many (not all) could be something like the following...
1g range- 300mg test, 300 tren and 400mg mast/npp
1.5g range- 400mg test, 400mg tren, 400mg npp and 300mg mast
2g range could be 500mg test, 300g tren, 500mg npp and 700mg primo.
Although I can't argue anyone wanting mass to run high test and lots of slin and gh (gh and slin being key).