Mcat,
Hair Club likes to keep you 'in the dark.' They don't want you to know about different types of bases, different types of ventilation, or any thing else. But they do want you to sign a contract. I have heard from more than one customer that when they were at Hair Club they felt like they never received a true custom piece. They feel that Hair Club just gave them a stock unit and tried to make it work. 'Knowledge is power' is absolutely true.
Regards,
John