Okay so to answer your question's I saw....
Usually PCT is time on(4 week cycle 4 weeks with a SERM*we will talk about that in a min*) The smart thing to do however is double the time off.Lets face it,your messing with hormone production.This will mess you up no matter how you go about things.8 weeks off for a 4 week cycle(4 weeks on SERM 4 weeks additional) is to make sure your levels get back to normal and your body recovers.
Over the counter PCT's are great test boosters but not really valid for a proper PCT.I would like you to give this thread a lookie loo.
http://anabolicminds.com/forum/steroids/192992-pct-what-why.html writen by manbeast.
This should explain PCT/SERMS and 9 times out of 9 pct is more important then your cycle.Just sayin.
Good non methyl's are MILD/CUTTERS11-oxo(mild as ****)Orastan-A(Furuza-A),Orastan-E(pstanz),BULKERS/MULTI USE:Tren(bulker?),Trenazone,bold,1-androsterone,Max LMG (and clones) and the Andro series from primordial . May be more but these are the contenders most use
Although using cycle support products are STILL suggested because of blood pressure and other sides.
Methyl's are hard on the liver but can have some amazing results.Taken with support supps the damage can be limited.Also can be stacked with non methyl's.Here's somemethyls
Cutters/recomp:Epistane / Havoc,Protodrol Here's where they shine though.... BULKERS/MULTI PURPOSE:Halodrol / H-Drol / Halo-D,Promagnon/ P-Mag,M-1,4ADD,Dymethazine,Pheraplex,Superdrol,Mass Tabs
There may be more compounds and I probably put some in the wrong place but this should give you an idea.A good dose for Hdrol is 50 mg's for the first 2 weeks to access how your body reacts then bump it up to 75 for the remainder of your cycle if this is your first time using.Always take cycle support products with or without methyl's.
Cutting/lean gains is very effective on non methyls but bulking is...in my opinion....better reserved for things like SD and wetter compounds.
Hope I helped.