I have played AT-43 a couple of times so far and I am surprised that the game runs so smoothly (Confrontation used to drive me nuts, because of the slow speed and wobbly rules).
What B-Berlin said, is pretty much the essence of the game. I'd like to add some comments on the "feeling":
When compared to other games like Confrontation or Warmachine, there is less micro-management e.g. position of individual figures, LOS restrictions or multiple health points for grunts.
At first I was a bit skeptic on the "simplified" rules for LOS, measuring distance and removing casualties, but the actual gameplay has been very enjoyable.
Less arguing on who can see whom and who can shoot at whom, more fast action.
I liked the fact that there is no special order on what can be done when activated, shoot/move or move/shoot are both possible (more shooting when you have more than one salvo).
Close Combat works a bit different: it is possible to threaten specific figures separately (e.g. going for the officer or some specialist) which is AFAIK only possible in ranged combat when you have a "sniper".
The German ruleset is readable and a nice book. The armylists found in the basic rulebook are only rudimentary, covering only the recent releases and IIRC not every special ability - if you intend to play the game it is likely that you will buy the armybooks, though.
A good thing is that the main part of the rules is available as a free download... missing only some chapters(fluff and missions) - you can stage a few battles and take the rules out for a testdrive without being forced to shell out 25€.
Conclusion: the game has promise.