From the first mirrorless camera GF-1 (2009) to now the fast af and affordable Pen EPM-1(2011). And now in 2012 , the OM-D from Olympus.
In Year 2014, I have completely moved my system to the Fujifilm X system due to personal taste etc. The M4/3 has revolutionize the mirrorless system to a serious camera segment and this is one of the best system in the mirrorless market.