Most fluid PzC East Front games?

[76mm]

I've got a few of the PzC East Front games, including Smolensk, Minsk, Moscow 41, Moscow 42, and Budapest.  I've found that I hate playing the ones with a lot of fortifications, which seems to include most of them other than Smolensk.  

I've also found that I don't particularly enjoy winter games, because the snow limits mobility so much...

As far as I can tell, the best one for me to pick up next would be Kharkov 42, which looks pretty good.  Can anyone confirm, or provide other recommendations (I generally only play East Front but I guess would consider something else).