I bought a new Farmtrac 535 last August. I looked at the 435, because I wanted to get the most tractor for the money. I decided that in the long run I wouldn't be satisfied without the power steering. I have about 140 hours on it now, and have been well pleased. I am an old farmer, and I am very comfortable with the 40 year old technology found on the Farmtracs. "You get what you pay for" is a good thing to keep in mind, but I decided that I did not really want to pay for all the things that make tractors appeal to people who have never farmed or used a tractor very much. I paid 11K for the 535, but it had been on the lot for a while, and the dealer had not sold a tractor in several weeks.
The 535 is, in my opinion, the nearest thing to the old 3000 Fords and 135 Fergusons we farmed with in the 60's and 70's. It is a basic, no frills, economical to purchase and operate, small utility tractor. It is perfectly suited for a small, say 20 acres, farm. I wouldn't be afraid to draw my 535 and the old 600 Ford on a 100 acre farm, especially if I could hire a good operator for about a month in the Spring.
I went back and got the FEL this spring, and I have been very pleasantly surprised how the tractor handles it. One thing I have discovered is that I don't have to mash the pedal that locks the differential; it automatically engages when a wheel starts to slip. My loader is for convenience and occasional use, not for loading lime all day or trying to dig a pond, etc.
I think the 535 is the biggest bang for the buck in an economical utility tractor for a small acreage. I have put some tough hours on mine, and have been well pleased.