My neighbor built one of the first houses on my road, about 25 years ago. After the "derecho" he said he'd had it and ordered a whole-house generator for about $4000. The contractor is out there hooking it up today. Good timing?
I just have portable generator and a transfer panel that lets me switch over a few essential circuits. Had only used it for a few hours until the big storm this summer, but was sure glad to have it then. It all cost around $1,000 when I got it in 2006.
I'm on a pretty high spot, and have been fine when many of my neighbors were flooded out. If it gets bad enough for me to need a boat, then it's gonna be a "Biblical" storm I think.