I have used the gen 1, 2, 3 and 4 HDPE fermenter and got on well with all of them.:)
The Gen 1 was a simple bucket with a snap on lid, no tap so siphon to secondary.
The gen 2 comes with a very handy tap, screw on lid with a sealing ring and airlock.
The gen 3 is similar to the gen 2 but the...