Brian,
Well, they are definately not the only game in town. I'm sure others will pop in with other options.
I won't get into "who's is better than the other" but FWIW I can speak to the Bullet Proof setup offered by Randy Thomas here.
http://bulletproofsteering.com/main.html
I ordered this set up a few years back when I was still driving the 77 almost daily. The 77's had that crappy tri-y tie rod set up that sucked to begin with and mine were shot. I can't say enough about this set up. And Randy was top notch to work with. I went with this set up mainly because of ease of installation. No reamers needed or any of that mess. I did it myself in a little over an hour with tools I and most anyone else with a Bronco already have.
The difference was more than night and day. I used to think I had a lot of play in my steering box. You know how most EB's you have to steer em 10 to 2 just to go straight? Gone... After the install, there was NO play, none! That thing was steering like an indy car on 35"s. I never reinstalled the steering stabilizer shock. There was no need. Death wobble, gone. Wandering, gone. Bump steer, gone. Made a believer outa me. I could go on and on.
If you are running much of a lift I would absolutely recommend the drop pitman arm & drop track bar mount. Also, don't just get the tie rods. Get the track bar too. Trust me. After it's all said and done you will NOT regret spending the money. I still feel it is the best mod I ever did. This set up is getting swapped into my latest project. And I am confident the setup will outlast the rest of the rig.
If you do order one of these set ups be sure you measure correctly, Randy likes to keep em strong and set it up so that there is a lot of thread in the tube at the rod ends.
I know, I know... what I sound like reminds me of that commercial..........."couple more buns in here Ethan, like to kiss em?". But I promise, I don't even know Randy. I am just one more than satisfied customer with this product and with his customer service. There's much more to the story, but I'll stop here ... I've butt kissed enough for one night.
Hope this helped. If you go that route & have any questions just shoot.
Jeff
Whew...