Tamiya & Dragon are BOTH good at the moment, prices will vary from location to location. Over here Dragon is more expensive than Tamiya.
Dragon offers indi tracks & pe parts, some of their kits come without figures though.
Tamiya includes Figures and accessories as well as PE and other parts in the new releases.
I just got the Dragon King Tiger with Porsche Turret, adding Tamiya King Tiger Indi tracks, AM Resin Zimmerit and a German tank crew at rest.
One thing I do not like with the Dragon KT issue is that it is nice to have the gun breach/loading mechanism modelled but when you look at it through the hatches you see an otherwise empty interior, which to me is wasted detail.
So I think it depends on what you are after and how you will display your Kit, Tamiya offers more for me when it comes to Dio. Individual tracks for seem a waste if the upper part of the tracks are invisible due to being covered by a skirt,
etc.
Italeri I was satisfied with, haven't done an Academy kit in 15yrs due to bad experiences with their early offerings.
Revell also has some interesting offerings, haven't done a Tristar or Baumann kit so no comment on them neither of most of the eastern europe manufacturers.