I tried the ego a-style tank, it pretty much sucked. I tried using homemade carto tanks, gave up on those after a month. Been using the ego-w with a VV ego-style battery with LED battery lift indicator, and that pretty much rocks. But so did all the others at first

I do like the battery though. Battery technology has improved a lot over the years. Seems like the parts that hold the liquid (tank, atty, carto, clearo, etc) have evolved as well, coming in all different shapes and sizes, but we still haven't reached anything close to perfection in any of them.