Then again I have seen 4 for $100 tosai end up being better than those labelled "Jumbo" Tosai....
The advantage of Jumbo Tosai is that you can see the quality the Koi will have sooner as it is larger and more developed.
Developed in what way? Quality? Wouldnt the Quality be the same compared to lets say a tosai 7" to a 11" tosai?
The disadvantage comes when Jumbo Tosai are sold that are not from Jumbo parents. What is the difference if the Tosai are from jumbo oyagoi 90cm+ or oyagoi in the 80cm size?