You already asked me this via PM.
Meth is meth is meth. Doesn't matter how to get there. If it's clean, it's good. Period.
The route you choose really depends on what materials are available to you & your personal preference in workup. If L-ephedrine or D-pseudoephedrine are available to you and you can get red phosphorus (or hypophosphoric acid) & iodine, I'd go with that. It's the easiest, simplest, safest route of all. Wizard X & Pebble covered this long ago at the Hive.
Reduction of Ephedrine to Methamphetamine Using Hypophosphorus Acid