If you don't want to be leaving your phone plugged into PCs that you've booted, you might look into the "iodd" brand devices - either enclosures that you can pu

If you don't want to be leaving your phone plugged into PCs that you've booted, you might look into the "iodd" brand devices - either enclosures that you can put your own SSD into or the Mini series that comes with (I think) an mSATA drive already installed. The Mini has a better screen for switching between ISOs and virtual disks.