I did alot of searching on the 'Net, including YotaTech (plenty of advice and suggestions here), and I'm going with the Wilderness rack. 4x4 Connection
has them on sale for 20% off, however they're on backorder. There are cheaper roof racks out there, but I wanted the Wilderness and willing to pay alittle extra.
There is alot of debating on whether or not putting the spare on the roof is a wise idea. The weight of the spare raises the center of gravity of the 4Runner making it top heavy.
I am working on a custom rear cargo box with space made for my spare to keep it in the vehicle when on the trail. I'll carry camping gear and other stuff on top that's not too heavy.