Test is test as long as it's a good quality product. Test400 by Denkall should be a fairly safe bet for Mexican vet products and from personal and others feedback should work very well!
I've tried the Denkall before and I think it's underdosed. It also caused severe soreness lasting several days after injecting. A few times it was so bad that I couldn't squat all the way down on my leg workout after injecting. I much prefer Organon Sus but it does cost a bit more.