Agree with everything that has been said, all 3 are fine selections.

Consider the fact that any KV or Tiger tanks are very large tanks sitting next to the HL Pz3 (which is also superior and fun).

The Tamiya Pz4 has a very small foot print like the HL Pz3 but is one of my most enjoyable builds and fun driving tanks to date.

But if size matters...well...

John