Help me pick my next gun

playing the SU100 need to make a gun and tank upgrade path choice.  100mm gun leads to SU152, 85mm gun leads to SU100M.    Not sure which way to go although leaning towards the 152 path. 

Suggestions?

SU152. The SU-100M line has a smaller gun all the way through the line. I take head on shots from IS-7s all day and bounce the majority of them in my 704. The rumble of the gun will make ya drool.

Thanks Hippie!