Thanks for all the help guys.
I personally don't like the
tanks because you have to suck harder and get too much air and not enough throat hit. Also there is a loss of flavour as mentioned.
I don't really find it a hassle to cut foam and insert it in the carts.
I do believe it just has to be measured and done properly.
Ordering foam and carts takes too long for me and how many people actually recycle all the used plastic and parts.
Much more environmentally friendly to wash and redo