I shoot a 62" Monarch Imperial which is 82#@28", it has Flat elm lams with Clear glass and a black glass core. Shoots very smooth but due to the glass core it is a little heavy drawing from the start.
Also have a 66" Imperial, 92#@29", same as above but Osage lams. Also a very smooth shooter.
Don't believe Monarchs are being made at this time.
I also shoot a 102# Bamabow Hunter, 65" amo. It is made of 5 lams of Bamboo with black glass belly and back. Very fast, very smooth, and very stout.
You can see Nate of Bamabows shooting this particular bow on youtube just search "shooting 102# longbow".
You can't go wrong buying a Bamabow, and the price is right. Nate is very easy to talk to and will go out of his way to help with your purchase. And he isn't happy until your pleased with your bow. Fantastic after sale service!
When going heavy, longer length bows are generally smoother drawing and little more stable. But I don't really see any major difference between my 62"-66" bows. To me they seem to all draw about the same. I can switch between them at any given time and have no problems.