Anyway, if you recall I'd only just repeated the old mantra 'If it ain't broke, don't fix it..."
Well, those of us- and there are many- who simply can't resist expanding their collection, could always say: '"yeah, it ain't broke, but it could be much better".
Well, after Painless posted those alluring images of the HL/Taigen hybrid- I just found myself clicking on some bits of Forgebear's site- before I could manage to tether the clicking hand down...
This is what I bought:

- Taigen Panther G Hull assembly

That's the hull, metal wheels and other bits.
In the same way that HL's upper hull bears a strong resemblance to Tamiya's, so does Taigen's lower hull... (and yes, they would, if they were both aiming for model accuracy- but then that was always Tamiya's design philosophy before, and not HL's, nor Taigen's, initially).
The arrangement of the torsion bars only really begins to differ with the bars themselves. As for the track tensioner, Taigen's is practically identical to Tamiya's. Some would say that's not a good thing, but I have no quibbles with the Tamiya design.
Here's Taigen's hull and track tensioner

And the Tamiya Panther. The whole tensioner is not wholly visible, but you can get the idea.

- Tamiya Hull compared with Taigen
Click to ENLARGE smaller images...