Rob, I prefer japanese bamboo from Jaap Kopedrayer (Yumi Bows). The times I purchased from him the bamboo was not spined or straightened and ran about $2 per shaft. Best bamboo I've found but a lot of work considering you can acquire the China cane already spined , straightened, and sealed for about the same money.
Next best product I've had the pleasure of working with is hill cane that PatB was kind enough to send me. That is an awful nice product but I haven't been able to find a source for it on a regular basis. I know Pat trades some from time to time and should try to find something to trade him for more in the Spring.
The Tiger cane actually gets a best buy rating from me but I have a tendency to purchase American made products when available.