I have Revell 1/72 Tiger, indefinitely under construction.
1/72 scale is probably the best when it comes to size, availability and price, 1/64 scale tanks are rare and expensive.
If you can find Maisto Fresh Metal Forces 4,5 (that’s a mouthful) tank, it should be inexpensive and close to the right size.
It just seems that finding them in Internet is harder than I thought (Local store carries them, no idea why Amazon doesn’t).
And don’t mix them with MFMF3, if you buy from a webstore. 4,5 for tank and apc, 3 for Humvee and Jeep.