After putting 18 hours on my 2305, I don't think I will purchase cruise control. I've mowed my way overgrown 5 acres 3 times. I had to go slow in low range on some of it mainly because it is rough. I'm not having a problem holding the pedal steady either mowing or using the loader. I find that I vary the speed enough that I don't think I would use cruise.
I suggest to anyone with a new tractor to try it first without cruise control to see if it's needed.