someone check my math

Momo, 5 hole steering wheels can directly attach to late model spider hubs, which in turn
can attach to older spiders (like my 73), directly. So momo wheels are an option, but I'm
seeing some 6 hole ones on ebay. Not sure how that factors in.
Momo also makes an adapter thats a bit pricey compared to a spider salvage part, that
has a crumple cage and extends the wheel out a bit.
Once you leave the momo/nardi world, not a whole lot of info out there. Has
anyone done any other brands of steering wheels on their cars?