Personally, I always make an attempt to model the thingy. But I use plastic kits, and for me conversions are fun projects. In the before times, I had to use some 1/76 and occaisional 1/72 kits instead of the preferred 1/87. Recently, I've been able to replace all those with 1/87.
Long ago, I converted 1/76 Matchbox M3 Stuarts into M5's; and then some of them into M8 HMC's with modified turrets from Roco M36's. Since replaced with 1/87 models, but it was really hard bringing myself to retire those conversions!
Did some very ersatz towed Flak by putting Roco 37mm and quad 20mm guns on whatever trailer chassis I could fit them on. Not so hard to retire those.
There are 1/87 M18's available these days, but since they sell for about $45 each, I'll stick with my own version, a Roco Bulldog chassis with a modified M36 turret.
M10 models do work great for disguised Panthers!
