Thoughts on Beutepanzers for German conquest

Hello, I've started a new conquest with the Germans fighting against the US. I've been messing around with the captured french tanks (including the scout car with the 25mm) instead of going down the main tank research tree. And was wondering what people's thoughts on them are and how to use them effectively.

My thoughts on them so far on the Pz.Kpfw 38H 735(f) (H-39), Pz.Kpfw 35S 739(f) (Somua S-35) and Pz.Kpfw B2 740(f) (Char B1):

-Slow to medium speeds

-Armoured pretty well to fend off light tanks

-Low crew count causing slow reload and decreased crew efficiency

-Howitzer on the Char is devastating on infantry and light vehicles

-37mm and 47mm cannons are ok at best against other light tanks

-Surprisingly fun to use early game, and a great challenge run

Sidenote: I now wish for more beutepanzer options in the research tree to get full playthough only with captured tanks with german markings. I do know that capturing enemy tanks on the battlefield is an option, but they won't be repainted.