I've tried santouka ramen before in Singapore and the portions were huge and the price relatively reasonable and I was sad to find out it wasn't the case in toronto. The wait times are long, the portions are small, the price is high and everything seems to be very salty (but that might just have been the tsukemen).
I am a big fan of tsukemen (where you dunk the noodles in your soup) and I was eager to try the one from santouka. I found the dipping soup to be overly salty (even for a tsukemen), the price a little bit steep for a ramen joint and the lack of toppings (bamboo shoots, meat, etc) disappointing.
With the amount of ramen joints in Toronto now, I don't really see the appeal of Santouka.