The Platz kit is very good; the best T-33 in any scale. It captures the shape well, again better than any other kit out there. Lockheed had a very distinctive rudder shape. Platz nailed this. Sword has a better detailed cockpit with their resin insert, but misses shape. Heller is chunky and misses shape. Hasegawa's ancient kit, one of their very first 72nd kits, is pretty good regarding shape. It is old, the molds are very tired, and it lacks detail. Still I rate it over both Heller and Sword.
I don't really follow 48th. I know only of the Academy/Hobbycraft kit. I hear it's shape is somewhat lacking.
In 32nd, Squadron released one tooled by CMK. As CMK and Sword are from the same family, I suspect the errors with the 72nd are probably present with the 32nd. TBH, I haven't seen the CMK kit, so my comment is conjecture and I may be totally wrong on this. If so, I offer my apologies to Squadron and CMK.
All that said, Platz' kit is not without its problems. I rate them as minor. Others may disagree. First the panel lines are a bit soft. Fit is a bit iffy, but nothing that can't be improved with some minor shimming. Platz kit is the only T-33 kit that actually attempted to present the glove vanes at the leading edge of the wing next to the fuselage. All the other kits provide red decal to represent these. Unfortunately, Platz ends these at the wing when in actuality these continue on to the wing fuselage fairing. Just outboard of the vane, Platz placed a square shape. This should be sharp. So all easy fixes.
Positives for this kit include Cartograf decals, great shape, decent detail with the option of adding photo etch from both Platz and Eduard, and really good engineering. Platz especially did well with the intakes.
I started this kit when it was first released, but stopped soon with a medically forced hiatus from modeling. So I'm picking up where I left off: This is the last photo I took when I left off:
This just shows the parts pieced together to test fit after adding a shim aft of the cockpit topside. The wings are glued together. The aft fuselage is together. The cockpit has been started with some paint and some photo etch added. The forward fuselage is still in parts. Some of the molded on detail needs to be sanded back a bit. Construction is about a third done.