I cannot speak for any other models, but I just received the tiger I early production by Tamiya in the mail. I have not had time to start it yet, but I must say that I can’t wait!! When I opened the box, I could not contain my excitement. Inside I found parts for both types of air filters, two different gun mantles, two different types of exhausts, an optional loaders periscope, and parts to have the option of an installed water proof cover over the turret ventilator. I also noticed that it comes with two turret pistol ports, but from what I can tell replacing the loaders hatch with the older pistol port may be a bit tricky. After a thorough inspection of the parts I don’t see any details that have been missed. I plan on replacing the fenders on mine, and drilling out the drivers apertures as for some reason they are not molded in. The tracks are the one piece, flexible kind, but are quite nicely detailed (but I will be replacing those as well). Like I said before, I cant speak for any other kits, but this one is well worth the price. I hope this helps
erick