I know Mdrol is the king but which one comes next as far strength and size?
Answer is highly dependent on individual response and dose.
This answer is going to vary for everyone. I think for me personally, Phera wins, not because it's stronger, but because I get no sides from Phera and bad sides from Tren, I can actually tolerate more Pheraplex and make more gains.
So as you can see the answer is not clear-cut at all. I think you'll have to try them all to really understand what works for you.
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<------ Hard to believe, but I wasn't on any anabolics in the avatar shot