I've had the 2030 for about a month now and have put around 15 hours on it. I've used the FEL to move about 30 yards of compost and soil with no issues.
I've used the 60 inch MMM one time so far on about 2 very hilly acres. It handles going up and down the hills like a champ. The mower does a good job, but it is VERY LOUD---sounds like a helo. taking off. Also, have used it to pull a 48 inch tiller through a rather large garden---plenty of power to handle this.
I looked at several with less HP, including the J2020, but was worried about mowing my hills. I'm glad I went bigger. It has a high and low range and I do wish there was a medium range as well.
I have the R4 tires and they don't tear the lawn up unless I stomp on the brake while going down hill.
The Fuel fill is in the middle of the hood, so it is a bit of a pain to fill - but still doable.
Happy with it so far.