As the others have stated Tren ace is the way to start, if you cant tolerate its sides, it will be out of your system within hrs. Tren is basically the most powerful steroid there is, the only other things out there that rival tren would be cheque drops, or methylytrienelone. And I wouldnt reccomend either as the side effects are basically that of stabbing your self in the liver on a daily basis.
Like 4chloro said Synovex pellets are truly the only 100% pure form of tren on this planet now, while many powder guys claim 98% USP purity, you just dont know. And as far as how meticulous your guy is, take that with a grain of salt as well. If you look at many of the pictures of operation raw deal, when they took down so many of the UGL's in 07, many of these guys were storing their 10ml vials in garbage cans, sterile garbage cans...lol. As long as a product is being made in a clean room, and I dont mean a clean room by Pharm standards then yes you have a low chance of getting stuck with shit that has been run through the same filter a dozen times so they can save on money, or there arent pets, or people smoking, and eating in the same room where the doing their brewing and capping. While many of these UG's in the past have come back with horrific lab results as far as the toxins in them, now a days you are finding more professional set ups, and guys with at least a good deal of knowledge of chemistry and pharmacology.
Yrs ago, IP was considered a very high risk person to deal with, now he is a legal pharmaceutical company. It was the fear of what wasnt known in the past, because people like him where few and far between, now he is probably the most successful man on the planet when it comes to this.
And as far as Alin goes, he is a pure pile of shit. All of his companies are UG, dont be fooled by the fancy labels, and exotic names. Tren cough is you merely nicking a vein and some tren getting to the lungs, this happens with a lot of injections. Tren cough doesnt mean you have a quality product by any means.
And Guido, be sure that your BF% is at least 10% or the masteron is worthless. Masteron is hardening, or I should say a polishing steroid, its not meant to melt fat, or anything else except suck the water out of you, give you paper thin skin, and a rock solid body