OK , it sounds like its time to chime in. Thanks for all the input to my original question. Now here's what I take away from all the comments. Most people are using the monster mill 2 or 3 roller. Great, cuz this is the one that I was focused on as well. Most are VERY happy with the performance and durability. Great once again. The roller diameter is something that I did not consider. I can see how a larger diameter would provide more surface to grain contact, flatter crush. However, larger diameter would raise the cost 4 times easily, not real sensible for the home brewer. The 3 roller gives more contact (crush time) than the 2 roller so....this will be my choice.
Now, another interesting point to consider other than the gap size, is the consistency of the crush. I would believe the 3rd roller addition will catch and crush any grain that may have sneaked through the first 2 rollers. Not crushing on a different axis cuz the grain is forced through, flattened and fed through the controlled gap width to the last roller, just crushing what snuk though the first crush. Wheat can be quite hard and would most probably benefit from the 3rd roller as well.
I'm consistently hitting 90+ efficiency brew house using the LHBS crushers. 2 separate LHBS that I use. I need to look closer at what roller size these guys have yet they do look like the large industrial type that I've seen for about $1500. I'm not sporting that $$. However I tightly control water/grain ratios, Mash PH, and also fly sparge. Crush is just 1 part of the efficiency factor. Id bet the Monster Mill 3 roller will make me happy. Its about $235. I'll be brewing 12 Gal batches at about 2 batches / month. Purchasing grain buy the bag is about a 40% savings so I will recover the Mill cost in a few months.