It depends on what you're looking for. I'd recommend green vein kratom if you want more energy, and red vein kratom if you're looking for something more relaxing or want to manage pain. There's also different strains, but they don't really have a big impact, it's mostly just marketing. Also, the quality can vary a lot with batches. You might get something good the first time, and then something more mediocre, even if it's the exact same product