Many great points about how to choose between three boat options (glad the field was limited to only 3). My two sense worth...
All three appeared well appointed and none particularly more comfortable than the other. Design is limited by the interior
volume and they all share roughly the same spec in this regard. I would opt for a two cabin
design, all else being equal, over the quarter berth; if anyone joins you, you will still have some privacy.
I would prioritize sailing characteristics between these boats since there is little all that different about the living space. When you raise the hook the love affair begins. There has to be a big difference between how these three boats sail, their speeds, how they maneuver, and feel in a seaway. The Rustler has to be the slowest and least maneuverable of the three. The HR is a tried and true blue water
German Frers design that is safe and relatively fast, well constructed and beautiful. If the price is the deciding factor then remove it from the list and choose between the two or consider other boats. If you spend more than you can afford then you might not have the scratch to fix the things that break which is likely to happen at equal rates on boats of the same vintage. When you sell your boat (and you will someday unless you, god forbid, sink her) you will get more money
for the HR but probably lose just as much no matter which one you buy. Some models sell faster than others (newer, well maintained, well constructed, popular ones).