Ed, WB and Mark did a good job not sure what I can add. I love bamboo rods and their history. The idea of a lone craftsman working in a basement as Garrison did blows my mind. He made beautiful fishing tools that cast smooth as butter. The history of the bamboo rod can be felt in the Catskills where Theodore Gordan onces traded Ed Paine 17 dozen flies for one of his rods.
WB is right they are not all equal. There are hand planed, machine planed, some made by a single craftsman some made by 5 or 6 different set of hands. Even production rods(made by more the one craftsman) have different levels. Subjectively speaking, Payne, Leonard, FE Thomas, Edwards were the top production rod makers. the second tier were the Grangers, Phillpipsons and Heddons. Rounding out the production rods were the Montagues, Horrock Ibotsons and others. That said some people prefer a Granger or Heddon(faster) over a Leonard(slower) because of their casting style. It all comes down to taper and rod speed.
Tapers are funny thing the newer builders can build the rods based on the tapers of the old masters but can again(subjective) possibly build a better rod. We have better glues and materials to work with today. They can also make the same taper lighter today.
The best way I know to try to compare graphite and bamboo is to compare it to cars.
Think about a 63 Corvette and a 76 El Dorado.(short and long rod) These were beautiful cars with great lines and you could feel the power, smell the interior and you would sleep in them if you could. Great cars with great utility at the time and still a lot of fun today.
Now think about a new Corvette and a new Cadillac. Performance wise they are quiter, quicker and are designed to last longer, but are they as beautiful and as much fun to drive? Depends on your taste. I do need to say that new bamboo rods as well as some of the old ones perform as well as our graphite rods of today.
The best part of the experience for me is not casting the rod but catching the fish. I can't tell you what it ifeels like to have a live fish on the end of a rod that is alive and transmits every head shake every run through out your whole body.
This post is in no way intended to disparage graphite or glass rods or the people that use them. I still use graphite but find myself using it less and less. Again, just preference.
Bamboo rods are not for everyone but if you want to try some different models let me know. Hope this helps. Andre