I do like Taiyaki, too!
Some people like the tail crisp, others like the tail filled with anko to the very tip end.
To be honest, I cannot choose either of them... I like both! (haha)
Recently they sell Taiyaki with new filling such as custard cream, chocolate cream, green tea cream, I even found non-sweet Taiyaki filled with curry!
They are not bad, but my favourite is still the old-fashioned one with sweet, good anko in it.
Also some new type of Taiyaki - shiroi taiyaki (white taiyaki) is available one.
I tried it and the texture is quite different, it's very chewy like mochi (rice cake).
It is not bad either, still I like the ordinary Taiyaki best.
(This thread makes me feel hungry for Taiyaki, ahh.)