Just got an email about a Black Friday sale on these fermentors, 25% off. These are the cadillac of conicals, I have the triclover version with the pressurizer and a spunding valve. My beer never sees air after its fermented. I think they are the only conical that you can completely carbonate your beer in if you want. I typically run my spunding valve to 15psi towards the end of fermentation, and push the beer to kegs with pressure then finish carbonating.
Not affiliated, just a big fan of the technology.