I used to like the Protank until I started using my iclear30S, big difference in vapor, taste and general ease of use. Later on when I started to recoil/rewick my Protank, I went back to it, but was pretty brief until I tried rebuilding the evods and PT2 minis. For me, had much better results with those.
As for PT2's being garbage as they are out of the box so to speak, IDK, I didn't have issue with them at the time, although now that I'm using a Kayfun, highly unlikely I would enjoy them as I did before.
Still, I think they are great entry toppers, and a perfect gateway into the world of rebuilding. Don't want the fuss of modifying? Then just get an iclear30S, set it, forget and enjoy your vape. iclear30S coils probably have the longest usage life I've experienced to date. (50+ refills with little to no change in performance)
Only thing though, you cant use cinnamon, licorice, or citrus heavy juices without the risk of tank damage since the iclear series tanks only come in polycarbonate. Same goes for e-liquids that have strong perfume/alcohol based flavorings.