6-oxo is only $8 (US $) more than M on 1fast, is there something else I'm missing? For legal PCT, I'd go with 6-oxo over any of your other choices, and it will take 2 bottles. If you can't get a hold of 6-oxo, I'd definitely take the E-Form post cycle. It's slightly suppressive, but beats the other 3 options you've got listed hands down. FYI - nolva would be about 1/2 the price and more effective.