http://www.apricorn.com/products/desktop-ssd-hdd-upgrade-kits/vel-solox2.html VS http://eshop.macsales.com/shop/SSD/PCIe/OWC/Mercury_Accelsior/Buy_Now Hey there, trying to figure if there's a serious difference or disadvantage to taking the Apricorn fitted with SSD 2.5 as opposed to the OWC. I figure I could save about $150 doing the Apricorn route on my MP 4,1 I'd like to keep Bay-1 open for another 4tb OWC says 'only bootable PCIe card based drive', I assume to house the regular OSX on it. Does that mean that any 2,5 SSD fitted onto the Apricorn would NOT be bootable as the main OS disc?? THX!!