I have a 3032e (with only 10 hours), but so far so good. My tires are not loaded (yet), and I can definately see the weight difference (and shorter wheelbase) when brush hogging over bumpy terrain vs the old 1960s Deere 2010 I borrowed.
I think it is a lot of tractor for the money and less to go wrong. Not to say the 3x20 series aren't nice, but I couldn't justify the extra $5500 to go to the 3320 for what I use it for.