@jacktlad noticed in your other post that you've got a KFL+, the protank will never give you the same flavour and versatility imo
Been scared of Kangers ever since I purchased 2 x Protank 3s which caused me no end of trouble, stuck with Innokin Iclears since.
May have to dip my toe and try the Aerotank though, certainly looks the part!
Havent tried the 30S but my 30 hasnt leaked, gurgled or delivered a single dry hit!