For clearos, I like these the best and they work really well. The only thing I don't like is the polycarbonate
tank part, wish it was made out of syringe plastic instead so it did not react with juices. Do let them sit about 15 min after fill to wick properly, I burnt one by not waiting. Mine did get cracks after about 2-3 weeks, but by then flavor was off so time to pitch them anyway. I love these clearos, just wish the plastic was different. Wish they would change that! bnrk