Ok...Ive tried 510's, lr510's, 801's, 901's, 905's, rn4081, rn4072, kr808d1 cartos...and so far the only one that has lasted a long time, provided great flavor, didnt get clogged a lot, and was versatile between voltages(which i only vary between 3.7-5v) and i am going to get more of them but i...