Does an external enclosure with an SSD in it benefit from being aluminum (metal) over the cheaper plastic ones? I'm planning on booting my imac off an external ssd connected via usb 3.0. Should I care about heat dissipation with an ssd as an external boot drive? Looking for advice. Searching on here, many people recommend OWC enclosures or the cheapy plastic inateck (uasp optimized) enclosure.