For some reason the E63 AMG wagons tend to hold onto their value better than the regular sedans.
There's also the 2014 E550, last year for the E550. There's also the 2014 S550, but that's probably a little out of your price range for used unless it has high mileage. At least with MB, their CPO warranty can be as long as 3 years with unlimited miles. There's also older E63's, but get 2012+ as the 2007-2011 ones had bad head bolts. I always liked the E550's, good mix of power and options, but the airmatic and worse gas mileage have always put me off. Too much traffic around here to go fast and the E350 is fine for me.
Oh yeah, if that's an E63 in the pic, that looks like it has the titanium rims. Just image how much they'd cost if you dented or cracked one. They list for well over 1k each.