Most fluid PzC East Front games?

[Plain Ian]

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).

I'm playing #a0106_06 Rzhev: Fording the Volga and it is more fluid than I expected and of course we have snow. 
The Russians have 5 Ski Battalions plus 3 very small Light Tank units (you can't call 6 tanks a Battalion?). Each Russian Infantry Division has a recon horse company (100 men) which are very mobile but only in T mode. 
The trick though is to batter a hole in the German lines and get these small units through. 
The Germans have some mobile units but as usual they are small. Anything with tracks (eg flak units) are good cross country units even in snow. And if there are roads then anything with wheels will do. 

Now if only I had the time to try this from Moscow 42.....