I like Ajisen Ramen :) The broth tastes amazing. Its true the portions could be a little better, who wouldn't like more meat but other than that its great.
I went to Ajisen Ramen in HK a few times and the broth here is on par. The staff is very friendly and as I've been working my way through the menu I have yet to be disappointed.
This place is an excellent choice if you feel like noodles but be warned there is often a line up during prime times. Take out is a good option too though.