The 16233 shows up as a gas grill. lol Did you mean the 19233?
The question is, do you want a mechanical or a computerized machine?
So far, I like the 19110 better because it has more needle positions and a tie off function. It also states that it has needle up/down option. Does this one have motor speed control? I like that feature.
The 19233 is apparently being discontinued from what I could find because it does not handle thick layers well. That was also a complaint on the 19110.
Don't really know what to tell you. Suggest reading the reviews on epinions and patternreview.