I had hoped for a little more activity from your post, Josh. I'm a PC/VST guy and have never been happy with hardware reliability... I have no confidence to take my laptop on the platform. I have heard that Mainstage is a great tool for using virtual instruments and I love Native Instruments stuff, including B4 and Vintage Organ.
Please share your Mac model and OS, and if you're comfortable, your experience with crashes and your backup. Thanks!!
"Rock On" (Matt 7:24-25)