Who makes the best model of the truck?

Tamiya or Bronco?

Is there another version I have not seen?

Bronco is better. The early type and late type is correctly shown. Tamiya one is a hybird.

Tamiya is from the 70's, Bronco is very recent. It is a no brainer. Plus Bronco gives a whole engine, while tamiya does an engine bottom only, plus the tamiya wheels, suspension, pinout marks leave a lot to be desired. The equipment and crew from tamiya are very blobby, and feel out of scale. Plus the price for bronco is very reasonable.

It is as always: It depends on what "best" means. Of course Tamiya's offer is from way ago and has its flaws, but it can basically be built on a rainy sunday afternoon. And if you go the distance with the weathering it can be transformed into a fairly good model of the Krupp Protze.
The Bronco offering is - as mentioned - very recent, with a ton of finely detailed parts, newest molding-technology, and runs by a 30% higher price tag (which in absolute numbers is still quite reasonable).

So if you are looking for a nice and easy built with a considerably lower price tag and chances for a fair result go with Tamiya.

If you want to have an up-to-date detailed, more fiddly, time-consuming, and pricier Krupp Protze that builds into a finely detailed show stopper (if tackled correctly and with patience) go with Bronco.

Go ahead and decide for yourself which one is the best.

Thanks for the responses.

Was thinking of throwing a stove on one.