Plenty of choices here brother! I've been a member of another another board for many years, I usually look in the sponsor section of both for positive reviews.
1.Tons of positive reviews from multiple members
2.Amount of time they've been in business
3.Review any third party testing you can find
4.Willingness for reps to resolve issues when they arrise.
5. Stick to cheap basic drugs (less likely to be faked) until you know for sure it's good sh#t ie. Test, Deca, Dianabol etc.
All this can be discovered by creeping on the sponsor section of this board and others. Also you can PM guys privatlely abouy their experiences with a particular lab. Still...you are taking a risk, it's part of the game as you know. Good luck.