I test drove a Steiner 430, Ventrac 4000 series and 3000 series recently all at the same dealer. They were all impressive machines to me. However, coming from a JD 2210 tractor, I was really missing the pedal for forward/reverse motion. When I drove the Steiner, I had a hard time adjusting to the hand lever and that was without trying to adjust an implement such as a blade.
Both Ventracs had the pedal option (standard on the 3000 series) and that helped me acclimate to the machines much more quickly (there is still an adjustment to the whole articulating tractor concept for me). The dealer even indicated they would simply throw in the pedal as it was a relatively inexpensive add-on. I came away thinking the 3223D was what I would want, as the 4000 series was likely too much for my needs. Budget was a factor as well. If I fell into the money, I might go with a 4227, but I have to say the maneuverability and line of sight on the 3000 series is very impressive for a guy who does mostly mowing. Regardless, I'd have to have that pedal option. I cannot imagine running a front-end loader very well having to use my hand to control direction as well as bucket and lift.