I originally used a paper Lipton tea bag because I couldn't figure out all the acronyms this place uses.
I thought PTB stood for
Paper Tea Bag.
That worked OK, but there was an underlying paper taste that I could only attribute to the bag.
Once I found out what the 'P' stood for, I ran all over town trying to find the Pyramid version. I use the "Made Easy" version that Kristen initiated, and I'm forever grateful.
I also use cartomizers, but they only seem to work well on HV <---(there I go with the acronyms - High Voltage), so I take them to work for use on my 5v pass-
through.