Our reasoning for a conical was the time savings of not having to transfer off the trub after the primary fermentation. With cleaning another car boy, sanatizing everything, transfering and then cleaning everything again we just didn't have time to do all of that. I should say my partner didn't have the time, he's got too many other endeavors! With the conical we just open the dump valve slowly and drop the trub out from under the beer. We could save the yeast but we just don't brew enough to warrant it. It's that time thing again! I noticed the price on the More Beer unit has gone up too! Ouch!
The difference between ignorance and stupidity is that you can fix ignorance... if you're not stupid!