Thanks to Apple's decision to shift to more proprietary fasteners, I went searching for the right tool and found a number of solutions at iFixit. The newer "pentalobe" screws actually come in several sizes and I wanted the chance to complete my own tweaks and repairs. The tool kit is much more expensive than some eBay options out there and it is evident IMMEDIATELY why this kit costs more- it is a one-stop-shop for any electronic fastener and seems VERY well made. Time will tell but pleased so far.
New tools but impressed so far.
If you are interested in a consolidated tool-kit for any electronic fastener I know of out there today, the iFixit kit is the ticket.