Continuing dabbling whilst on current WWII kick and decided to get my 6mm kit out on table for a change adapting a RF scenario 'Cristot' from Normandy supplement.
Tried Blitzkrieg Commander IV first off and whilst its pretty slick and easy overall I found the tank combat aspect rather less than satisfying.
Then I tried a really venerable old set No1 Wargames Command Rules for WW2 (from 1976) and conversely the tank combat in this was great (been ages since I used a set with hit percentages and armour levels in mm of thickness) but the infantry end of things much less so with very slow movement (20-30mm).
In the end I re-jigged OOB slightly to accommodate Spear Head which I always come back to for this scale (my stuff based primarily for SH) and trying a slightly less rigid order system (essentially allowing Attack orders not to be constrained by direction arrows) which worked fine as a lighter approach.