Unless you're spey fishing, I think the Orvis basket is the best one out there. It's worth the money.
I don't see how anyone can build a better one.
BTW, the problem with the Bean basket is that's it's too wide and you'll hit your hand when you haul downward.
For spey casting I couldn't find the Mangrove basket, but I was able to find the replacement cones and pins at Fly Fishing Gear - Burleson Sporting Co.
. I then built my own basket that I keep on my hips - not my front.