I own a Protank 3 mini and a aerotank mini. Both are great
tanks that never ever leaked on me. Like many said before, the replaceable heads are a hit or miss and some just don't last long until they start gurgling however, if you rebuild them properly they almost become on par to a kayfun... Well maybe not exactly on par but close enough.
When I think that a pt3 mini costs under $10 bucks and the aerotank mini a little more and both have a very simple design that works and glass
tanks that most hi end attys don't have, I must admit that they are worth more money you spent on them.
The only reason I moved to kayfuns was because they are made to be rebuildable and I love to rebuild and tinker with them. If it weren't for that, I probably wouldn't had moved because of 10-15% better flavor / vapor.
My two cents
Regards
Tony
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