Can you explain why it has to be 72"? Your draw of 30.5" is long but not all that long and there are plenty of shorter bows that could easily accomodate 30.5". If you made your upper limit 70" it would open up a nice selection. There are even plenty of 68 or 66" bows that would be more than adequate, and even quite a few shorter than that. So youre set on a 1pc? That will narrow the field quite a bit but you have quite a few excellent potential choices. Honestly if you go beyond a 70" bow, as few choices as there are above that range youd actually be losing performance. Your query kinda made me chuckle...its like you burst through the doors of the saloon and were like "hey! Fellas! Now you listen here I got somethin ta say and tell you a thing or two about a thing or two!" ...and a whole bunch of salty rough ridin cowboys just turned around with a look like "the heck you say?" So tell us, what got your heart set on a 72"++ bow thats "not an english longbow"? Pull up a chair, stay a while pardner.
The thing you said that caught my eye was the remark about your 66" bow not feeling as good as the Elb of the same draw weight. Is that the same measured weight at your draw length or the marked weight at 28"?I'm thinking that your 66" bow is probably stacking at your 30.5" draw length. I'm certain that you can have a smooth stack free bow built at your desired draw weight with a 70" length. If you put out some inquiries to a few bowyers you should be able to find one who can build a bow to fit you.
Both bows were identically marked for 28".---it is the last couple of inches that stacking occurs--the draw cycle is affected by a multitude of factors----IMO proper taper rates are more important to your needs than overall length
There a re a lot of custom bowyers out there. Contact some of them and ask if they can build to your specs. If not, they may be able to advise you as to why that length is not necessary to get the shooting characteristics you seek. Stay in touch and let us know how your search works out. The only bow I have near that length is a 71" ELB, and it is very smooth. I also have several ASL bows that are just as smooth, and they are 68". However, my draw length is not nearly as long as yours.
Javaman makes a 70" Impala.Way above $200 though....$750 I think.Gregg will build you a VERY nice bow.For a quality bow in the price range you're looking for you may very well be searching for used bows.There is a good classified section on this site, RMS gear has quite a few used bows as well.You could check out Howard Hill bows, Little Crow and Northern Mist....only Bowers that came to mind that might make something in that length.
Have you considered looking into a string follow design? I have found that my string follow ASL is smoother on the draw than my straight limb designed bow (at least for me at my draw length). That said, I find both to be great on the draw and love shooting them both.